CN1986846A - Magnesite hot enriching process - Google Patents
Magnesite hot enriching process Download PDFInfo
- Publication number
- CN1986846A CN1986846A CN 200610134894 CN200610134894A CN1986846A CN 1986846 A CN1986846 A CN 1986846A CN 200610134894 CN200610134894 CN 200610134894 CN 200610134894 A CN200610134894 A CN 200610134894A CN 1986846 A CN1986846 A CN 1986846A
- Authority
- CN
- China
- Prior art keywords
- magnesite
- oxide
- light
- ore
- roasting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000001095 magnesium carbonate Substances 0.000 title claims abstract description 34
- 229910000021 magnesium carbonate Inorganic materials 0.000 title claims abstract description 34
- 235000014380 magnesium carbonate Nutrition 0.000 title claims abstract description 31
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 16
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 19
- 235000010755 mineral Nutrition 0.000 claims abstract description 19
- 239000011707 mineral Substances 0.000 claims abstract description 19
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 12
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000292 calcium oxide Substances 0.000 claims abstract description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000010298 pulverizing process Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000005188 flotation Methods 0.000 description 3
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
本发明涉及菱镁矿热选工艺，该工艺是以＜20mm粒度的菱镁矿贫矿为原料，在600～1000℃之间焙烧，并保温2s～150min，使原矿充分分解；然后对轻烧镁石进行自粉碎和筛分，把焙烧后硬度和强度存在差异的主矿物与含杂质矿物分开，去除氧化钙、氧化硅和部分氧化铁、氧化铝等夹杂矿物，提高轻烧氧化镁粉纯度；热选后得到的轻烧镁粉的MgO含量可以达到96％以上。具有工艺流程短，生产过程易于控制，生产效率高，成本低，适应性强，对低品位菱镁矿有很好的提纯效果等优点。The invention relates to a magnesite thermal separation process. The process uses magnesite lean ore with a particle size of <20mm as raw material, roasts it at 600-1000°C, and keeps it warm for 2s-150min to fully decompose the raw ore; then lightly burns Magnesite is self-crushed and sieved to separate the main minerals with different hardness and strength after roasting from impurity minerals, remove calcium oxide, silicon oxide, part of iron oxide, aluminum oxide and other inclusion minerals, and improve the purity of light-burned magnesium oxide powder ; The MgO content of the lightly burned magnesium powder obtained after thermal selection can reach more than 96%. It has the advantages of short technological process, easy control of the production process, high production efficiency, low cost, strong adaptability, and good purification effect on low-grade magnesite.
Description
Technical field
The present invention relates to the technology of wagnerite Mineral resources deep processing.Purify by the heat choosing, effectively improve the grade of magnesite lean ore, realize mine tailing classification use.This method has improved the economic value added of low-grade magnesite, has realized the comprehensive utilization of Mineral resources, and has solved the in short supply and lean ore of current magnesite rich ore idle great resource and environmental problem.
Background technology
Industry such as metallurgy, electronics, chemical industry at present constantly increase the demand of high purity, high-density magnesia, and the resource of magnesite rich ore reduces day by day, therefore, purification magnesite lean ore, the comprehensive utilization magnesite resource is extremely urgent.
Light-burning magnesium powder by magnesite at a lower temperature thermal degradation make, its quality is restricted by the factors such as purity, structure and Impurity Distribution of magnesite to a great extent.For this reason, many in the world countries all are devoted to improve the research of magnesite purity, China mainly is to adopt flotation to the purification of magnesite at present, flotation purification magnesite exists the technical process complexity, invest shortcomings such as big, and maybe can not separate with impurity separation difficulty such as calcium oxide the ferric oxide that exists with class matter homophase in rhombspar, the calcite; Also the someone adopts chemical mineral processing, but this method exists complex technical process, processing parameter to be difficult to shortcomings such as control and cost height.
Summary of the invention
Problem at prior art exists the purpose of this invention is to provide a kind of magnesite lean ore heat and selects technology.This technology is carried out light-burned to the magnesite lean ore, different according to main body mineral behind the roasting magnesite and impure mineral grindability, to light-burned magnesia carry out from pulverize, screening, remove impurity such as calcium oxide, silicon oxide, ferric oxide, the magnesite lean ore is become rich ore.
For achieving the above object, the present invention is achieved through the following technical solutions:
Magnesite hot enriching process is characterized in that: this technology is that the magnesite lean ore with＜20mm granularity is a raw material, and roasting between 600～1000 ℃, and insulation 2s～150min are fully decomposed raw ore; Then light-burned magnesia is carried out from pulverizing and screening, the host that hardness after the roasting and intensity be there are differences separate with impure mineral, and removal calcium oxide, silicon oxide and partial oxidation iron, aluminum oxide etc. are mingled with mineral, raising light-magnesite powder purity; The MgO content of the light-burning magnesium powder that obtains after the heat choosing can reach more than 96%.
The present invention's beneficial effect compared with prior art is:
1) with the lean ore be raw material, strong to adaptability to raw material.
2) difference that exists of hardness and the intensity by host after the roasting and impure mineral and host and impurity separate, removal calcium oxide, silicon oxide and partial oxidation iron, aluminum oxide etc. are mingled with mineral.Magnesite light-burned back hardness and intensity are all less, so its broken pulverizing by light-burned magnesia is realized from pulverizing.
3) light-burning magnesium powder that obtains after overheated choosing of magnesite lean ore, MgO content can reach more than 96%, has realized by " poor " transformation to " richness " lean ore being utilized effectively.
4) compare with flotation process, ferric oxide, the calcium oxide that exists with isomorph in the magnesite can be effectively removed in hot choosing; Compare with the chemical mineral processing method, heat selects each parameter of process to control well, and technological process is easy to realize.
In general, heat selects the method technical process short, and production process is easy to control, the production efficiency height, and cost is low, and adaptability is strong, and low-grade magnesite is had good refining effect.
Embodiment
Magnesite hot enriching process, this technology are that the magnesite lean ore with＜20mm granularity is a raw material, and roasting between 600～1000 ℃, and insulation 2s～150min are fully decomposed raw ore; Select suitable disintegrating apparatus that light-burned magnesia is carried out from pulverizing then, because the hardness and the intensity of host and impure mineral there are differences, has different grain size categories after making host and impure mineral being pulverized, separate with impure mineral according to the difference of the grain size category host after roasting, remove calcium oxide, silicon oxide and partial oxidation iron, aluminum oxide etc. and be mingled with mineral, improve light-magnesite powder purity; The MgO content of the light-burning magnesium powder that obtains after the heat choosing can reach more than 96%.
Claims (1)
1, magnesite hot enriching process is characterized in that: this technology is that the magnesite lean ore with＜20mm granularity is a raw material, and roasting between 600～1000 ℃, and insulation 2s～150min are fully decomposed raw ore; Then light-burned magnesia is carried out from pulverizing and screening, the host that hardness after the roasting and intensity be there are differences separate with impure mineral, and removal calcium oxide, silicon oxide and partial oxidation iron, aluminum oxide etc. are mingled with mineral, raising light-magnesite powder purity; The MgO content of the light-burning magnesium powder that obtains after the heat choosing can reach more than 96%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101348949A CN100462449C (en) | 2006-12-20 | 2006-12-20 | Magnesite hot enriching process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101348949A CN100462449C (en) | 2006-12-20 | 2006-12-20 | Magnesite hot enriching process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1986846A true CN1986846A (en) | 2007-06-27 |
| CN100462449C CN100462449C (en) | 2009-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101348949A Expired - Fee Related CN100462449C (en) | 2006-12-20 | 2006-12-20 | Magnesite hot enriching process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100462449C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531415A (en) * | 2011-11-29 | 2012-07-04 | 宋重本 | Novel process for physically purifying low-grade amorphous magnesite-magnesium oxide |
| CN102653459A (en) * | 2011-03-01 | 2012-09-05 | 辽宁科技大学 | Thermal separation method and device of light-burned magnesia |
| CN102774861A (en) * | 2012-08-17 | 2012-11-14 | 海城三星矿业有限公司 | Purification process of high-purity magnesia |
| CN102838345A (en) * | 2012-09-25 | 2012-12-26 | 上海同化新材料科技有限公司 | Preparation method of magnesium oxide for insulated cable knob insulator, magnesium oxide and application of magnesium oxide |
| CN102850053A (en) * | 2012-09-25 | 2013-01-02 | 上海同化新材料科技有限公司 | Preparation method of mineral insulated cable porcelain column |
| CN103204641A (en) * | 2012-01-16 | 2013-07-17 | 东北大学 | Purification method for low-grade magnesite via hydration |
| CN104190523A (en) * | 2014-08-21 | 2014-12-10 | 营口东吉科技（集团）有限公司 | Low-grade magnesite selective dissociation equipment and method |
| CN108751751A (en) * | 2018-08-23 | 2018-11-06 | 淄博美盛化工有限公司 | A kind of heat of magnesite tailings selects technique |
| CN110639687A (en) * | 2019-10-21 | 2020-01-03 | 辽宁科技大学 | Thermal separation process of low-grade hydromagnesite ore |
| WO2020007062A1 (en) * | 2018-07-05 | 2020-01-09 | 沈阳化工大学 | Fluidized bed two-stage gasification and flash light calcined magnesite integration process |
| CN111285628A (en) * | 2020-02-17 | 2020-06-16 | 王选福 | Comprehensive utilization method of low-grade magnesite |
| WO2020199232A1 (en) * | 2019-03-29 | 2020-10-08 | 东北大学 | Method for preparing high-purity light-burned magnesia from low-grade magnesite by calcination to remove calcium and silicon |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108710B (en) * | 1985-12-02 | 1988-05-25 | 冶金工业部马鞍山矿山研究院 | Method and device for light burning magnesite in fluidized bed furnace |
| CN86102011A (en) * | 1986-03-24 | 1987-11-11 | 冶金工业部马鞍山矿山研究院 | Flotation process for magnesite |
| JP2001348623A (en) * | 2000-06-07 | 2001-12-18 | Nkk Corp | Method for producing high quality low SiO2 sintered ore for blast furnace |
-
2006
- 2006-12-20 CN CNB2006101348949A patent/CN100462449C/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653459A (en) * | 2011-03-01 | 2012-09-05 | 辽宁科技大学 | Thermal separation method and device of light-burned magnesia |
| CN102653459B (en) * | 2011-03-01 | 2014-05-21 | 辽宁科技大学 | Thermal separation method and device of light-burned magnesia |
| CN102531415A (en) * | 2011-11-29 | 2012-07-04 | 宋重本 | Novel process for physically purifying low-grade amorphous magnesite-magnesium oxide |
| CN102531415B (en) * | 2011-11-29 | 2013-07-17 | 宋重本 | Novel process for physically purifying low-grade amorphous magnesite-magnesium oxide |
| CN103204641A (en) * | 2012-01-16 | 2013-07-17 | 东北大学 | Purification method for low-grade magnesite via hydration |
| CN102774861A (en) * | 2012-08-17 | 2012-11-14 | 海城三星矿业有限公司 | Purification process of high-purity magnesia |
| CN102850053A (en) * | 2012-09-25 | 2013-01-02 | 上海同化新材料科技有限公司 | Preparation method of mineral insulated cable porcelain column |
| CN102838345B (en) * | 2012-09-25 | 2014-03-26 | 上海同化新材料科技有限公司 | Preparation method of magnesium oxide for insulated cable knob insulator, magnesium oxide and application of magnesium oxide |
| CN102838345A (en) * | 2012-09-25 | 2012-12-26 | 上海同化新材料科技有限公司 | Preparation method of magnesium oxide for insulated cable knob insulator, magnesium oxide and application of magnesium oxide |
| CN102850053B (en) * | 2012-09-25 | 2014-07-16 | 上海同化新材料科技有限公司 | Preparation method of mineral insulated cable porcelain column |
| CN104190523A (en) * | 2014-08-21 | 2014-12-10 | 营口东吉科技（集团）有限公司 | Low-grade magnesite selective dissociation equipment and method |
| WO2020007062A1 (en) * | 2018-07-05 | 2020-01-09 | 沈阳化工大学 | Fluidized bed two-stage gasification and flash light calcined magnesite integration process |
| CN108751751A (en) * | 2018-08-23 | 2018-11-06 | 淄博美盛化工有限公司 | A kind of heat of magnesite tailings selects technique |
| WO2020199232A1 (en) * | 2019-03-29 | 2020-10-08 | 东北大学 | Method for preparing high-purity light-burned magnesia from low-grade magnesite by calcination to remove calcium and silicon |
| CN110639687A (en) * | 2019-10-21 | 2020-01-03 | 辽宁科技大学 | Thermal separation process of low-grade hydromagnesite ore |
| CN110639687B (en) * | 2019-10-21 | 2021-08-03 | 辽宁科技大学 | A kind of thermal separation process of low-grade hydromagnesite ore |
| CN111285628A (en) * | 2020-02-17 | 2020-06-16 | 王选福 | Comprehensive utilization method of low-grade magnesite |
| CN111285628B (en) * | 2020-02-17 | 2021-09-03 | 王选福 | Comprehensive utilization method of low-grade magnesite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100462449C (en) | 2009-02-18 |
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Granted publication date: 20090218 Termination date: 20191220 |