CN103433119A - Application of steel mill desulphurizing slag separating graphite - Google Patents
Application of steel mill desulphurizing slag separating graphite Download PDFInfo
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- CN103433119A CN103433119A CN2013103172984A CN201310317298A CN103433119A CN 103433119 A CN103433119 A CN 103433119A CN 2013103172984 A CN2013103172984 A CN 2013103172984A CN 201310317298 A CN201310317298 A CN 201310317298A CN 103433119 A CN103433119 A CN 103433119A
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- 239000002893 slag Substances 0.000 title claims abstract description 178
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 20
- 239000010959 steel Substances 0.000 title claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 9
- 239000010439 graphite Substances 0.000 title claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- 238000006477 desulfuration reaction Methods 0.000 claims description 173
- 230000023556 desulfurization Effects 0.000 claims description 173
- 239000004088 foaming agent Substances 0.000 claims description 35
- 239000002002 slurry Substances 0.000 claims description 30
- 239000000428 dust Substances 0.000 claims description 29
- 239000002994 raw material Substances 0.000 claims description 24
- 238000005188 flotation Methods 0.000 claims description 20
- 230000000630 rising effect Effects 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000004566 building material Substances 0.000 claims description 15
- 238000009628 steelmaking Methods 0.000 claims description 15
- QWXYZCJEXYQNEI-OSZHWHEXSA-N intermediate I Chemical compound COC(=O)[C@@]1(C=O)[C@H]2CC=[N+](C\C2=C\C)CCc2c1[nH]c1ccccc21 QWXYZCJEXYQNEI-OSZHWHEXSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 7
- 239000003350 kerosene Substances 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims 6
- 230000000694 effects Effects 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 230000003179 granulation Effects 0.000 claims 1
- 238000005469 granulation Methods 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 239000002245 particle Substances 0.000 description 14
- 238000005422 blasting Methods 0.000 description 12
- 238000013019 agitation Methods 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 7
- 239000008396 flotation agent Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000007885 magnetic separation Methods 0.000 description 4
- 239000004604 Blowing Agent Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000013067 intermediate product Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- -1 that is Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Manufacture And Refinement Of Metals (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
the
一、 技术领域 1. Technical field
本发明涉及一种脱硫渣分离物的用途，尤其是一种钢厂脱硫渣分选成石墨分离物的应用。 The invention relates to the use of a desulfurization slag separation, in particular to the application of separating the desulfurization slag from a steel plant into graphite separation.
二、 背景技术 2. Background technology
在钢铁生产中，会产生大量的脱硫渣即钢渣，而脱硫渣作用钢铁的副产品还没有被利用，堆积的脱硫渣对环境会产生污染，现在还都是把脱硫渣分离物直接用作炼铁材料，还没有其它方面应用。 In the production of iron and steel, a large amount of desulfurization slag, that is, steel slag, will be produced. However, the desulfurization slag has not been used as a by-product of steel. The accumulated desulfurization slag will pollute the environment. Now the desulfurization slag is still used directly for ironmaking. material, and has no other application.
三、 发明内容 3. Contents of the invention
为了克服上述技术缺点，本发明的目的是提供一种钢厂脱硫渣分选石墨的应用，因此开拓了脱硫渣分离物的其它用途。 In order to overcome the above-mentioned technical shortcomings, the object of the present invention is to provide an application of separating graphite from desulfurization slag in steel mills, thus opening up other applications of desulfurization slag separation.
为达到上述目的，本发明采取的技术方案是：钢厂脱硫渣的脱硫渣分离物作为铸造件的增碳剂的用途。 In order to achieve the above object, the technical solution adopted by the present invention is: the use of the desulfurization slag separation from the desulfurization slag of the steel plant as a recarburizer for castings.
使得到的脱硫渣分离物的含碳量为90-95%，因此开拓了脱硫渣分离物的其它用途。 The obtained desulfurization slag separation has a carbon content of 90-95%, thus opening up other uses of the desulfurization slag separation.
本发明设计了，脱硫渣分离物设置为脱硫渣中间物Ⅴ，制作脱硫渣中间物Ⅴ的步骤是： The present invention designs that the desulfurization slag separation is set as the desulfurization slag intermediate V, and the steps for making the desulfurization slag intermediate V are:
a、初选：把脱硫渣进行物理初选，把脱硫渣中块状钢粒作为炼钢原料使用，剩余的细粒粉尘设置为脱硫渣中间物Ⅰ； a. Primary selection: conduct physical primary selection on desulfurization slag, use massive steel particles in desulfurization slag as steelmaking raw materials, and set the remaining fine dust as desulfurization slag intermediate Ⅰ;
b、筛分：把脱硫渣中间物Ⅰ通过直径为10-16目的筛网分离得到颗粒度大于3mm的成份含铁元素的脱硫渣中间物Ⅱ和10-16目的成份含碳元素的脱硫渣中间物Ⅲ，使脱硫渣中间物Ⅱ沿与竖直方向呈15-20°的分离板下落、使脱硫渣中间物Ⅲ自由垂直下落，在风量为10-20m3/h作用下，除去附着在脱硫渣中间物Ⅱ和脱硫渣中间物Ⅲ上的灰尘，收集到的灰尘作为建材原料； b. Screening: Separate the desulfurization slag intermediate I through a sieve with a diameter of 10-16 mesh to obtain the iron-containing desulfurization slag intermediate II with a particle size greater than 3mm and the desulfurization slag intermediate 10-16 mesh containing carbon elements Make the desulfurization slag intermediate II drop along the separation plate 15-20° from the vertical direction, make the desulfurization slag intermediate III fall freely and vertically, and remove the desulfurization residue attached to the desulfurization Dust on slag intermediate II and desulfurization slag intermediate III, the collected dust is used as building materials;
c、浮选：设置为包含有粗选和精选， c. Flotation: set to include rough selection and selection,
粗选：按照脱硫渣中间物Ⅲ：捕收剂：起泡剂的比例1T:4.9-5.4 kg:3.9-5.4 kg加入捕收剂和起泡剂，再加入水调成浓度为22-27%的浆液，使浆液在每小时充气85-95m3的空气的浮选罐中通过转速为900-1000转/分钟的搅拌作用，形成直径为8-10mm的气泡，收集随着浮选药剂上升的气泡得到脱硫渣中间物Ⅳ； Rough selection: According to the ratio of desulfurization slag intermediate III: collector: foaming agent 1T: 4.9-5.4 kg: 3.9-5.4 kg, add collector and foaming agent, and then add water to adjust the concentration to 22-27% Make the slurry in the flotation tank inflated with 85-95m3 air per hour through the agitation of 900-1000 rpm to form bubbles with a diameter of 8-10mm, and collect the rising flotation agent Air bubbles to obtain desulfurization slag intermediate IV;
精选：按照脱硫渣中间物Ⅳ：捕收剂：起泡剂的比例1T:1.3-1.7 kg:0.8-1.1 kg加入捕收剂和起泡剂，再加入水调成浓度为22-27%的浆液，使浆液在每小时充气85-95m3的空气的浮选罐中通过转速为转速为900-1000转/分钟的搅拌作用，形成直径为8-10mm的气泡，收集上升的气泡按照上述步骤进行第二次精选，再收集上升的气泡得到脱硫渣中间物Ⅴ；粗选和精选的余物为脱硫渣中间物Ⅶ，把脱硫渣中间物Ⅴ进行脱水浓缩、烘干和造粒，得到直径约为5mm的颗粒状的脱硫渣中间物Ⅵ。 Selection: add collector and foaming agent according to the ratio of desulfurization slag intermediate IV: collector: foaming agent 1T: 1.3-1.7 kg: 0.8-1.1 kg, and then add water to adjust the concentration to 22-27% The slurry, make the slurry in the flotation tank inflated with 85-95m3 air per hour, through the agitation with a rotation speed of 900-1000 rpm to form bubbles with a diameter of 8-10mm, and collect the rising bubbles according to the above The second step is to refine, and then collect the rising air bubbles to obtain the desulfurization slag intermediate V; the residue of rough selection and selection is the desulfurization slag intermediate VII, and the desulfurization slag intermediate V is dehydrated, concentrated, dried and granulated , to obtain a granular desulfurization slag intermediate VI with a diameter of about 5 mm.
本发明设计了，捕收剂设置为煤油。 The present invention designs, and collector is set to kerosene.
本发明设计了，起泡剂设置为杂醇或2＃油。 The present invention designs that the foaming agent is set to fusel alcohol or 2# oil.
在本技术方案中，脱硫渣设置为炼钢脱硫过程中除去钢水的剩余物。 In this technical solution, the desulfurization slag is set as the residue of molten steel removal during the steelmaking desulfurization process.
在本技术方案中，脱硫渣分离物的含碳量为90-95%为重要技术特征，在钢厂脱硫渣分选石墨的应用的技术领域中，具有新颖性、创造性和实用性。 In this technical solution, the carbon content of the desulfurization slag separation is 90-95% is an important technical feature, and it has novelty, creativity and practicability in the technical field of the application of graphite separation from desulfurization slag in steel plants.
四、 具体实施方式 4. Specific implementation methods
下面结合实施例，对本发明进一步描述，以下实施例旨在说明本发明而不是对本发明的进一步限定。第一个实施例，其步骤是： The present invention will be further described below in conjunction with the examples, and the following examples are intended to illustrate the present invention rather than further limit the present invention. First embodiment, its steps are:
a、初选：把脱硫渣进行物理初选，把脱硫渣中块状钢粒作为炼钢原料使用，得到为颗粒状态的脱硫渣中间物Ⅰ。 a. Primary selection: The desulfurization slag is subjected to physical primary selection, and the massive steel particles in the desulfurization slag are used as steelmaking raw materials to obtain the desulfurization slag intermediate I in a granular state.
b、筛分：把脱硫渣中间物Ⅰ通过直径为10目的筛网分离得到颗粒度为3mm的成份为铁元素的脱硫渣中间物Ⅱ和10目的成份为碳元素的脱硫渣中间物Ⅲ，使脱硫渣中间物Ⅱ沿与竖直方向呈15°的分离板下落、使脱硫渣中间物Ⅲ自由垂直下落，在风量为10m3/h作用下，除去附着在脱硫渣中间物Ⅱ和脱硫渣中间物Ⅲ上的灰尘，收集到的灰尘作为建材原料。 b. Screening: Separate the desulfurization slag intermediate I through a sieve with a diameter of 10 mesh to obtain the desulfurization slag intermediate II with a particle size of 3mm and the composition of iron elements and the desulfurization slag intermediate III with a 10 mesh composition of carbon. The desulfurization slag intermediate II falls along the separation plate at 15° to the vertical direction, so that the desulfurization slag intermediate III falls freely and vertically, and under the action of an air volume of 10m 3 /h, removes the desulfurization slag intermediate II and the middle of the desulfurization slag. The dust on the object Ⅲ, the collected dust is used as building materials.
c、浮选：设置为包含有粗选和精选， c. Flotation: set to include rough selection and selection,
粗选：按照脱硫渣中间物Ⅲ：捕收剂：起泡剂的比例1T:4.9kg:3.9kg加入捕收剂和起泡剂，再加入水调成浓度为22%的浆液，使浆液在每小时充气85m3的空气的浮选罐中通过转速为900转/分钟的搅拌作用，形成直径为8mm的气泡，收集随着浮选药剂上升的气泡得到脱硫渣中间物Ⅳ； Rough selection: add collector and foaming agent according to the ratio of desulfurization slag intermediate III: collector: foaming agent 1T:4.9kg:3.9kg, and then add water to make a slurry with a concentration of 22%, so that the slurry is In the flotation tank inflated with 85m3 air per hour, through the agitation at a speed of 900 rpm, bubbles with a diameter of 8mm are formed, and the bubbles rising with the flotation agent are collected to obtain the desulfurization slag intermediate IV;
精选：按照脱硫渣中间物Ⅳ：捕收剂：起泡剂的比例1T:1.3kg:0.8kg加入捕收剂和起泡剂，再加入水调成浓度为22%的浆液，使浆液在每小时充气85m3的空气的浮选罐中通过转速为转速为900转/分钟的搅拌作用，形成直径为8mm的气泡，收集上升的气泡按照上述步骤进行第二次精选，再收集上升的气泡得到脱硫渣中间物Ⅴ；粗选和精选的余物为脱硫渣中间物Ⅶ，把脱硫渣中间物Ⅴ进行脱水浓缩、烘干和造粒，得到直径约为5mm的颗粒状的脱硫渣中间物Ⅵ，脱硫渣中间物Ⅵ作为铸造件的增碳剂使用。 Selection: add collector and foaming agent according to the ratio of desulfurization slag intermediate Ⅳ: collector: foaming agent 1T:1.3kg:0.8kg, and then add water to make a slurry with a concentration of 22%, so that the slurry is In the flotation tank inflated with 85m3 air per hour, through the stirring action with a rotation speed of 900 rpm, bubbles with a diameter of 8mm are formed, and the rising bubbles are collected for the second selection according to the above steps, and then the rising bubbles are collected. Desulfurization slag intermediate Ⅴ is obtained by air bubbles; the residue of rough selection and selection is desulfurization slag intermediate Ⅶ, and the desulfurization slag intermediate Ⅴ is dehydrated, concentrated, dried and granulated to obtain granular desulfurization slag with a diameter of about 5mm Intermediate VI, desulfurization slag Intermediate VI is used as a recarburizer for castings.
按照脱硫渣中间物Ⅶ：捕收剂：起泡剂的比例1T:4.9 kg:3.9 kg加入捕收剂和起泡剂，再加入水调成浓度为22%的浆液，使浆液在每小时充气85m3的空气的浮选罐中通过转速为900转/分钟的搅拌作用，形成直径为8mm的气泡，收集上升的气泡得到脱硫渣中间物Ⅷ，余物为脱硫渣中间物Ⅸ，脱硫渣中间物Ⅷ作为建材原料，脱硫渣中间物Ⅸ作为炼钢原料。 According to the ratio of desulfurization slag intermediate VII: collector: foaming agent 1T: 4.9 kg: 3.9 kg, add collector and foaming agent, then add water to make a slurry with a concentration of 22%, and inflate the slurry every hour In the 85m3 air flotation tank, through the stirring at a speed of 900 rpm, bubbles with a diameter of 8mm are formed, and the rising bubbles are collected to obtain the desulfurization slag intermediate Ⅷ, and the remainder is the desulfurization slag intermediate Ⅸ, and the desulfurization slag intermediate Compound Ⅷ is used as raw material for building materials, and intermediate product Ⅸ of desulfurization slag is used as raw material for steelmaking.
d、抛丸处理：把脱硫渣中间物Ⅱ进行磁选，然后在转速为2500转/分钟的抛丸容器中，通过脱硫渣中间物Ⅱ的颗粒相互抛丸处理，除尘后得到脱硫渣中间物Ⅹ，脱硫渣中间物Ⅹ作为炼钢原料，收集除尘后的除尘灰作为建材原料。 d. Shot blasting treatment: The desulfurization slag intermediate II is subjected to magnetic separation, and then in a shot blasting container with a rotating speed of 2500 rpm, the particles of the desulfurization slag intermediate II are shot blasting each other, and the desulfurization slag intermediate is obtained after dust removal Ⅹ, desulfurization slag intermediate Ⅹ is used as raw material for steelmaking, and dust after dust removal is collected as raw material for building materials.
在本实施例中，捕收剂设置为煤油。 In this embodiment, the collector is set to kerosene.
在本实施例中，起泡剂设置为杂醇。 In this embodiment, the blowing agent is set to fusel alcohol.
在本实施例中，经过测试，脱硫渣中间物Ⅵ的含碳量为90-95%，脱硫渣中间物Ⅸ和脱硫渣中间物Ⅹ含铁量为90-93%，建材原料的主要成份为硅酸盐类物质适合作为水泥的添加剂。 In this example, after testing, the carbon content of desulfurization slag intermediate VI is 90-95%, the iron content of desulfurization slag intermediate IX and desulfurization slag intermediate X is 90-93%, and the main components of building materials are Silicate substances are suitable as additives for cement.
脱硫渣综合利用工艺系统主要包括对脱硫渣中细粒粉尘的预处理系统和细粒粉尘中高碳石墨的分选提纯加工系统。细粒粉尘中高碳石墨的分选提纯加工系统包括分选、提纯、产品成形、和无尾化处理四大方面，即可以实现脱硫渣的无尾化综合利用。 The comprehensive utilization process system of desulfurization slag mainly includes a pretreatment system for fine-grained dust in desulfurization slag and a separation and purification processing system for high-carbon graphite in fine-grained dust. The separation and purification processing system of high-carbon graphite in fine dust includes four aspects: separation, purification, product forming, and tail-free treatment, which can realize the tail-free comprehensive utilization of desulfurization slag.
第二个实施例，其步骤是： Second embodiment, its steps are:
a、初选：把脱硫渣进行物理初选，把脱硫渣中块状钢粒作为炼钢原料使用，得到为颗粒状态的脱硫渣中间物Ⅰ。 a. Primary selection: The desulfurization slag is subjected to physical primary selection, and the massive steel particles in the desulfurization slag are used as steelmaking raw materials to obtain the desulfurization slag intermediate I in a granular state.
b、筛分：把脱硫渣中间物Ⅰ通过直径为16目的筛网分离得到颗粒度3.5mm的成份为铁元素的脱硫渣中间物Ⅱ和16目的成份为碳元素的脱硫渣中间物Ⅲ，使脱硫渣中间物Ⅱ沿与竖直方向呈20°的分离板下落、使脱硫渣中间物Ⅲ自由垂直下落，在风量为20m3/h作用下，除去附着在脱硫渣中间物Ⅱ和脱硫渣中间物Ⅲ上的灰尘，收集到的灰尘作为建材原料。 b. Screening: Separate the desulfurization slag intermediate I through a 16-mesh sieve to obtain the desulfurization slag intermediate II with a particle size of 3.5mm and the composition of iron elements and the 16-mesh desulfurization slag intermediate III with a carbon element. The desulfurization slag intermediate II falls along the separation plate at 20° to the vertical direction, so that the desulfurization slag intermediate III falls freely and vertically, and under the action of an air volume of 20m 3 /h, removes the desulfurization slag intermediate II and the middle of the desulfurization slag. The dust on the object Ⅲ, the collected dust is used as building materials.
c、浮选：设置为包含有粗选和精选， c. Flotation: set to include rough selection and selection,
粗选：按照脱硫渣中间物Ⅲ：捕收剂：起泡剂的比例1T: 5.4 kg: 5.4 kg加入捕收剂和起泡剂，再加入水调成浓度为27%的浆液，使浆液在每小时充气95m3的空气的浮选罐中通过转速为1000转/分钟的搅拌作用，形成直径为10mm的气泡，收集随着浮选药剂上升的气泡得到脱硫渣中间物Ⅳ； Rough selection: add collector and foaming agent according to the ratio of desulfurization slag intermediate III: collector: foaming agent 1T: 5.4 kg: 5.4 kg, and then add water to make a slurry with a concentration of 27%, so that the slurry is In the flotation tank inflated with 95m3 air per hour, through the agitation at a speed of 1000 rpm, bubbles with a diameter of 10mm are formed, and the bubbles rising with the flotation agent are collected to obtain the desulfurization slag intermediate IV;
精选：按照脱硫渣中间物Ⅳ：捕收剂：起泡剂的比例1T: 1.7 kg: 1.1 kg加入捕收剂和起泡剂，再加入水调成浓度为27%的浆液，使浆液在每小时充气95m3的空气的浮选罐中通过转速为转速为1000转/分钟的搅拌作用，形成直径为10mm的气泡，收集上升的气泡按照上述步骤进行第二次精选，再收集上升的气泡得到脱硫渣中间物Ⅴ；粗选和精选的余物为脱硫渣中间物Ⅶ，把脱硫渣中间物Ⅴ进行脱水浓缩、烘干和造粒，得到直径约为5mm的颗粒状的脱硫渣中间物Ⅵ，脱硫渣中间物Ⅵ作为铸造件的增碳剂使用。 Selection: add collector and foaming agent according to the ratio of desulfurization slag intermediate IV: collector: foaming agent 1T: 1.7 kg: 1.1 kg, and then add water to make a slurry with a concentration of 27%, so that the slurry is In the flotation tank inflated with 95m3 air per hour, through the stirring action with a rotation speed of 1000 rpm, bubbles with a diameter of 10mm are formed, and the rising bubbles are collected for the second selection according to the above steps, and then the rising bubbles are collected. Desulfurization slag intermediate Ⅴ is obtained by air bubbles; the residue of rough selection and selection is desulfurization slag intermediate Ⅶ, and the desulfurization slag intermediate Ⅴ is dehydrated, concentrated, dried and granulated to obtain granular desulfurization slag with a diameter of about 5mm Intermediate VI, desulfurization slag Intermediate VI is used as a recarburizer for castings.
按照脱硫渣中间物Ⅶ：捕收剂：起泡剂的比例1T: 5.4 kg: 5.4 kg加入捕收剂和起泡剂，再加入水调成浓度为27%的浆液，使浆液在每小时充气95m3的空气的浮选罐中通过转速为1000转/分钟的搅拌作用，形成直径为10mm的气泡，收集上升的气泡得到脱硫渣中间物Ⅷ，余物为脱硫渣中间物Ⅸ，脱硫渣中间物Ⅷ作为建材原料，脱硫渣中间物Ⅸ作为炼钢原料。 Add collector and foaming agent according to the ratio of desulfurization slag intermediate VII: collector: foaming agent 1T: 5.4 kg: 5.4 kg, then add water to make a slurry with a concentration of 27%, and inflate the slurry every hour In the 95m3 air flotation tank, through the agitation at a speed of 1000 rpm, bubbles with a diameter of 10mm are formed, and the rising bubbles are collected to obtain the desulfurization slag intermediate Ⅷ, and the remainder is the desulfurization slag intermediate Ⅸ, and the desulfurization slag intermediate Compound Ⅷ is used as raw material for building materials, and intermediate product Ⅸ of desulfurization slag is used as raw material for steelmaking.
d、抛丸处理：把脱硫渣中间物Ⅱ进行磁选，然后在转速为3000转/分钟的抛丸容器中，通过脱硫渣中间物Ⅱ的颗粒相互抛丸处理，除尘后得到脱硫渣中间物Ⅹ，脱硫渣中间物Ⅹ作为炼钢原料，收集除尘后的除尘灰作为建材原料。 d. Shot blasting treatment: The desulfurization slag intermediate II is subjected to magnetic separation, and then in a shot blasting container with a rotation speed of 3000 r/min, the particles of the desulfurization slag intermediate II are shot blasting each other, and the desulfurization slag intermediate is obtained after dust removal Ⅹ, desulfurization slag intermediate Ⅹ is used as raw material for steelmaking, and dust after dust removal is collected as raw material for building materials.
在本实施例中，捕收剂设置为煤油。 In this embodiment, the collector is set to kerosene.
在本实施例中，起泡剂设置为2＃油。 In this example, the foaming agent is set to 2# oil.
第三个实施例，其步骤是： The third embodiment, its steps are:
a、初选：把脱硫渣进行物理初选，把脱硫渣中块状钢粒作为炼钢原料使用，得到为颗粒状态的脱硫渣中间物Ⅰ。 a. Primary selection: The desulfurization slag is subjected to physical primary selection, and the massive steel particles in the desulfurization slag are used as steelmaking raw materials to obtain the desulfurization slag intermediate I in a granular state.
b、筛分：把脱硫渣中间物Ⅰ通过直径为13目的筛网分离得到颗粒度4mm的成份为铁元素的脱硫渣中间物Ⅱ和13目的成份为碳元素的脱硫渣中间物Ⅲ，使脱硫渣中间物Ⅱ沿与竖直方向呈17.5°的分离板下落、使脱硫渣中间物Ⅲ自由垂直下落，在风量为15m3/h作用下，除去附着在脱硫渣中间物Ⅱ和脱硫渣中间物Ⅲ上的灰尘，收集到的灰尘作为建材原料。 b. Screening: Separate the desulfurization slag intermediate I through a screen with a diameter of 13 meshes to obtain the desulfurization slag intermediate II with a particle size of 4mm and the composition of iron elements and the desulfurization slag intermediate III with a 13 mesh composition of carbon elements. The slag intermediate II falls along the separation plate at 17.5° from the vertical direction, so that the desulfurization slag intermediate III falls freely and vertically, and the desulfurization slag intermediate II and the desulfurization slag intermediate are removed under the action of an air volume of 15m 3 /h The dust on Ⅲ, the collected dust is used as building material raw material.
c、浮选：设置为包含有粗选和精选， c. Flotation: set to include rough selection and selection,
粗选：按照脱硫渣中间物Ⅲ：捕收剂：起泡剂的比例1T: 5.2kg:4.6kg加入捕收剂和起泡剂，再加入水调成浓度为24.5%的浆液，使浆液在每小时充气90m3的空气的浮选罐中通过转速为950转/分钟的搅拌作用，形成直径为9mm的气泡，收集随着浮选药剂上升的气泡得到脱硫渣中间物Ⅳ； Rough selection: add collector and foaming agent according to the ratio of desulfurization slag intermediate III: collector: foaming agent 1T: 5.2kg:4.6kg, and then add water to make a slurry with a concentration of 24.5%. In the flotation tank inflated with 90m3 air per hour, through the agitation at a speed of 950 rpm, bubbles with a diameter of 9mm are formed, and the bubbles rising with the flotation agent are collected to obtain the desulfurization slag intermediate IV;
精选：按照脱硫渣中间物Ⅳ：捕收剂：起泡剂的比例1T:1.5 kg: 1.0 kg加入捕收剂和起泡剂，再加入水调成浓度为24.5%的浆液，使浆液在每小时充气90m3的空气的浮选罐中通过转速为转速为950转/分钟的搅拌作用，形成直径为9mm的气泡，收集上升的气泡按照上述步骤进行第二次精选，再收集上升的气泡得到脱硫渣中间物Ⅴ；粗选和精选的余物为脱硫渣中间物Ⅶ，把脱硫渣中间物Ⅴ进行脱水浓缩、烘干和造粒，得到直径约为5mm的颗粒状的脱硫渣中间物Ⅵ，脱硫渣中间物Ⅵ作为铸造件的增碳剂使用。 Selection: add collector and foaming agent according to the ratio of desulfurization slag intermediate IV: collector: foaming agent 1T: 1.5 kg: 1.0 kg, and then add water to make a slurry with a concentration of 24.5%, so that the slurry is In the flotation tank inflated with 90m3 air per hour, through the agitation with a rotation speed of 950 rpm, bubbles with a diameter of 9mm are formed, and the rising bubbles are collected for the second selection according to the above steps, and then the rising bubbles are collected. Desulfurization slag intermediate Ⅴ is obtained by air bubbles; the residue of rough selection and selection is desulfurization slag intermediate Ⅶ, and the desulfurization slag intermediate Ⅴ is dehydrated, concentrated, dried and granulated to obtain granular desulfurization slag with a diameter of about 5mm Intermediate VI, desulfurization slag Intermediate VI is used as a recarburizer for castings.
按照脱硫渣中间物Ⅶ：捕收剂：起泡剂的比例1T: 5.2 kg:4.6 kg加入捕收剂和起泡剂，再加入水调成浓度为24.5%的浆液，使浆液在每小时充气90m3的空气的浮选罐中通过转速为950转/分钟的搅拌作用，形成直径为9mm的气泡，收集上升的气泡得到脱硫渣中间物Ⅷ，余物为脱硫渣中间物Ⅸ，脱硫渣中间物Ⅷ作为建材原料，脱硫渣中间物Ⅸ作为炼钢原料。 According to the ratio of desulfurization slag intermediate VII: collector: foaming agent 1T: 5.2 kg: 4.6 kg, add collector and foaming agent, then add water to make a slurry with a concentration of 24.5%, and inflate the slurry every hour In the 90m3 air flotation tank, through the stirring at a speed of 950 rpm, bubbles with a diameter of 9mm are formed, and the rising bubbles are collected to obtain the desulfurization residue intermediate VIII, and the remainder is desulfurization residue intermediate IX, and the desulfurization residue intermediate Compound Ⅷ is used as raw material for building materials, and intermediate product Ⅸ of desulfurization slag is used as raw material for steelmaking.
d、抛丸处理：把脱硫渣中间物Ⅱ进行磁选，然后在转速为2750转/分钟的抛丸容器中，通过脱硫渣中间物Ⅱ的颗粒相互抛丸处理，除尘后得到脱硫渣中间物Ⅹ，脱硫渣中间物Ⅹ作为炼钢原料，收集除尘后的除尘灰作为建材原料。 d. Shot blasting treatment: The desulfurization slag intermediate II is subjected to magnetic separation, and then in a shot blasting container with a rotational speed of 2750 rpm, the particles of the desulfurization slag intermediate II are shot blasting each other, and the desulfurization slag intermediate is obtained after dust removal Ⅹ, desulfurization slag intermediate Ⅹ is used as raw material for steelmaking, and dust after dust removal is collected as raw material for building materials.
在本实施例中，捕收剂设置为煤油。 In this embodiment, the collector is set to kerosene.
在本实施例中，起泡剂设置为杂醇。 In this embodiment, the blowing agent is set to fusel alcohol.
第四个实施例，其步骤是： The fourth embodiment, its steps are:
a、初选：把脱硫渣进行物理初选，把脱硫渣中块状钢粒作为炼钢原料使用，得到为颗粒状态的脱硫渣中间物Ⅰ。 a. Primary selection: The desulfurization slag is subjected to physical primary selection, and the massive steel particles in the desulfurization slag are used as steelmaking raw materials to obtain the desulfurization slag intermediate I in a granular state.
b、筛分：把脱硫渣中间物Ⅰ通过直径为15目的筛网分离得到颗粒度3mm的成份为铁元素的脱硫渣中间物Ⅱ和15目的成份为碳元素的脱硫渣中间物Ⅲ，使脱硫渣中间物Ⅱ沿与竖直方向呈18°的分离板下落、使脱硫渣中间物Ⅲ自由垂直下落，在风量为19m3/h作用下，除去附着在脱硫渣中间物Ⅱ和脱硫渣中间物Ⅲ上的灰尘，收集到的灰尘作为建材原料。 b. Screening: Separate the desulfurization slag intermediate I through a sieve with a diameter of 15 mesh to obtain the desulfurization slag intermediate II with a particle size of 3mm and the composition of iron elements and the desulfurization slag intermediate III with a 15 mesh composition and carbon element. The slag intermediate II falls along the separation plate at 18° to the vertical direction, so that the desulfurization slag intermediate III falls freely and vertically, and the desulfurization slag intermediate II and the desulfurization slag intermediate are removed under the action of an air volume of 19m 3 /h The dust on Ⅲ, the collected dust is used as building material raw material.
c、浮选：设置为包含有粗选和精选， c. Flotation: set to include rough selection and selection,
粗选：按照脱硫渣中间物Ⅲ：捕收剂：起泡剂的比例1T:4.95kg: 5.1kg加入捕收剂和起泡剂，再加入水调成浓度为26%的浆液，使浆液在每小时充气94m3的空气的浮选罐中通过转速为908转/分钟的搅拌作用，形成直径为8.6mm的气泡，收集随着浮选药剂上升的气泡得到脱硫渣中间物Ⅳ； Rough selection: According to the ratio of desulfurization slag intermediate III: collector: foaming agent 1T: 4.95kg: 5.1kg, add collector and foaming agent, and then add water to make a slurry with a concentration of 26%, so that the slurry is In the flotation tank inflated with 94m3 air per hour, through the agitation at a speed of 908 rpm, bubbles with a diameter of 8.6mm are formed, and the bubbles rising with the flotation agent are collected to obtain the desulfurization slag intermediate IV;
精选：按照脱硫渣中间物Ⅳ：捕收剂：起泡剂的比例1T:1.6 kg:0.9kg加入捕收剂和起泡剂，再加入水调成浓度为23%的浆液，使浆液在每小时充气87m3的空气的浮选罐中通过转速为转速为950转/分钟的搅拌作用，形成直径为8.6mm的气泡，收集上升的气泡按照上述步骤进行第二次精选，再收集上升的气泡得到脱硫渣中间物Ⅴ；粗选和精选的余物为脱硫渣中间物Ⅶ，把脱硫渣中间物Ⅴ进行脱水浓缩、烘干和造粒，得到直径约为5mm的颗粒状的脱硫渣中间物Ⅵ，脱硫渣中间物Ⅵ作为铸造件的增碳剂使用。 Selection: add collector and foaming agent according to the ratio of desulfurization slag intermediate Ⅳ: collector: foaming agent 1T:1.6 kg:0.9kg, and then add water to make a slurry with a concentration of 23%, so that the slurry is In the flotation tank inflated with 87m3 air per hour, through the agitation at a speed of 950 rpm, bubbles with a diameter of 8.6mm are formed, and the rising bubbles are collected for the second refinement according to the above steps, and then the rising bubbles are collected. desulfurization slag intermediate Ⅴ; the residue from rough selection and selection is desulfurization slag intermediate Ⅶ. The desulfurization slag intermediate Ⅴ is dehydrated, concentrated, dried and granulated to obtain granular desulfurization slag with a diameter of about 5mm. Slag intermediate VI and desulfurization slag intermediate VI are used as recarburizers for castings.
按照脱硫渣中间物Ⅶ：捕收剂：起泡剂的比例1T:4.99 kg:3.98 kg加入捕收剂和起泡剂，再加入水调成浓度为23%的浆液，使浆液在每小时充气88m3的空气的浮选罐中通过转速为920转/分钟的搅拌作用，形成直径为9.4mm的气泡，收集上升的气泡得到脱硫渣中间物Ⅷ，余物为脱硫渣中间物Ⅸ，脱硫渣中间物Ⅷ作为建材原料，脱硫渣中间物Ⅸ作为炼钢原料。 Add collector and foaming agent according to the ratio of desulfurization slag intermediate VII: collector: foaming agent 1T:4.99 kg:3.98 kg, then add water to make a slurry with a concentration of 23%, and inflate the slurry every hour In the 88m 3 air flotation tank, through stirring at a speed of 920 rpm, bubbles with a diameter of 9.4mm are formed, and the rising bubbles are collected to obtain the desulfurization slag intermediate Ⅷ, and the remainder is desulfurization slag intermediate Ⅸ, desulfurization slag Intermediate Ⅷ is used as raw material for building materials, and intermediate Ⅸ of desulfurization slag is used as raw material for steelmaking.
d、抛丸处理：把脱硫渣中间物Ⅱ进行磁选，然后在转速为2800转/分钟的抛丸容器中，通过脱硫渣中间物Ⅱ的颗粒相互抛丸处理，除尘后得到脱硫渣中间物Ⅹ，脱硫渣中间物Ⅹ作为炼钢原料，收集除尘后的除尘灰作为建材原料。 d. Shot blasting treatment: The desulfurization slag intermediate II is subjected to magnetic separation, and then in a shot blasting container with a rotation speed of 2800 rpm, the particles of the desulfurization slag intermediate II are shot blasting each other, and the desulfurization slag intermediate is obtained after dust removal Ⅹ, desulfurization slag intermediate Ⅹ is used as raw material for steelmaking, and dust after dust removal is collected as raw material for building materials.
在本实施例中，捕收剂设置为煤油。 In this embodiment, the collector is set to kerosene.
在本实施例中，起泡剂设置为杂醇。 In this embodiment, the blowing agent is set to fusel alcohol.
上述实施例只是本发明所提供的钢厂脱硫渣分选石墨的应用的一种实现形式，根据本发明所提供的方案的其他变形，增加或者减少其中的成份或步骤，或者将本发明用于其他的与本发明接近的技术领域，均属于本发明的保护范围。 Above-mentioned embodiment is just a kind of realization form of the application of the steel plant desulfurization slag sorting graphite provided by the present invention, according to other distortions of the scheme provided by the present invention, increase or reduce wherein composition or step, or the present invention is used for Other technical fields close to the present invention all belong to the protection scope of the present invention.
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