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WO2019006889A1 - 一种用于工业生产的硫化铜钴矿双区浮选方法 - Google Patents

一种用于工业生产的硫化铜钴矿双区浮选方法 Download PDF

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Publication number
WO2019006889A1
WO2019006889A1 PCT/CN2017/102857 CN2017102857W WO2019006889A1 WO 2019006889 A1 WO2019006889 A1 WO 2019006889A1 CN 2017102857 W CN2017102857 W CN 2017102857W WO 2019006889 A1 WO2019006889 A1 WO 2019006889A1
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Prior art keywords
zone
slurry
flotation
enters
ore
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English (en)
French (fr)
Inventor
卢建安
王振堂
彭云奇
段建平
杨海瑞
段景文
张恩普
张倩
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WANBAO MINING Ltd
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WANBAO MINING Ltd
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Priority to AU2017421972A priority Critical patent/AU2017421972B2/en
Publication of WO2019006889A1 publication Critical patent/WO2019006889A1/zh
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/002—Inorganic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1406—Flotation machines with special arrangement of a plurality of flotation cells, e.g. positioning a flotation cell inside another
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/007—Modifying reagents for adjusting pH or conductivity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/02—Collectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/04—Frothers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/06—Depressants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; Specified applications
    • B03D2203/02—Ores

Definitions

  • the invention belongs to the technical field of mineral processing engineering, and particularly relates to a two-zone flotation method for copper sulfide cobalt ore used for industrial production.
  • the beneficiation of copper sulfide cobalt ore currently has few mature industrial applications in China.
  • the recovery rate and concentrate grade are two interrelated and contradictory indicators in the field of mineral processing. There is a problem that the grade and recovery rate are not easy to be separated and controlled.
  • the technical problem solved by the invention is to provide a two-zone flotation method for copper sulphide ore for industrial production, and realize efficient recovery of copper and cobalt elements in sulphide sulphide ore in the industrial production field.
  • the use of the dual-step flotation method effectively alleviates the contradiction between the recovery rate and the concentrate grade in the field, and improves the efficiency of quality control.
  • the recovery efficiency and the optimization efficiency of the concentrate index are greatly improved, and the relative separation control of the grade and the recovery rate is realized.
  • a two-zone flotation method for copper sulfide cobalt ore for industrial production comprising the following steps
  • the ore from the automobile is directly poured into the mine bin through the original ore sieve, and transported to the jaw crusher through the heavy plate feeder, and the coarsely crushed product is transported to the intermediate heap through the belt conveyor;
  • the intermediate ore pile is set as the supply buffer for the sorting process
  • the ore of the intermediate heap is transported by belt to a semi-autogenous mill for grinding.
  • the material under the sieve enters the grinding pump pool and is sent to the hydrocyclone for classification by the slurry pump.
  • the sediment enters the ball mill for grinding, and the ball mill grinds the product. After entering the grinding pump pool, it is sent to the hydrocyclone by the slurry pump, and the overflow product is sent to the flotation, and the sediment continues to enter the ball mill for grinding;
  • Step 4 Flotation
  • Zone I is mainly used for concentrate index control
  • Zone II is used for recovery rate control
  • Zone I and Zone II have two mixing buckets, one for each. Bucket and 2# mixing tank, each of the two areas produces a concentrate product, namely concentrate 1 and concentrate 2;
  • the I-zone flotation operation adopts the process of two coarse one sweeping three fines
  • the coarse selection of the first zone is added to the 1# mixing tank.
  • the hydrocyclone overflows the slurry into the 1# mixing tank, that is, the starting point of the I zone, after the slurry is fully stirred, it enters the rough selection operation flotation tank.
  • the crude material of the I zone is added to the mixing tank of 1#, wherein the pH adjuster lime dosage is 600g/t, the pulp pH is guaranteed to be 9.5 ⁇ 10.0, the inhibitor sodium humate dosage is 150g/t, and the foaming agent 2# oil
  • the dosage is 70g/t, and the dosage of the collector butyl yellow is 60g/t.
  • the type and amount of the added agent in the rough selection operation of the I zone is: the amount of the inhibitor sodium humate is 70 g/t, Foaming agent 2# oil dosage 24g / t, collector butyl yellow dosage 35g / t.
  • the I zone sweeping operation only adds the collector butyl xanthate in an amount of 25 g/t.
  • the I zone selection operation only adds the inhibitor sodium humate in an amount of 40 g/t.
  • the selected I operation of the I zone only added the inhibitor sodium humate in an amount of 20 g/t.
  • Zone II The flotation operation in Zone II is a rough two-sweeping process
  • the chemicals in the rough selection of Zone II are added to the 2# mixing tank. After the slurry is fully mixed, it enters the rough selection and flotation tank. The slurry of the rough selection operation enters the sweeping and selection operation, and the slurry enters the selected operation area of Zone II.
  • the slurry of one operation enters the second cleaning operation, the foam returns to the rough selection operation, the second operation does not add the flotation reagent, the second slurry is selected to enter the tailings pond, and is transported to the tailings thickener through the slurry pump;
  • the operation is divided into three selections, one selected job foam enters the selected two operations, the slurry is returned to the rough selection operation, the selected two operation foams are entered into the selection three, and the selected two and the selected three operations are sequentially returned to the fine. Select one and select two, the three selected foam is the concentrate 2 product.
  • the agent for rough selection in the II region is a collector butyl xanthate and an inhibitor sodium humate in amounts of 20 g/t and 30 g/t, respectively.
  • the II zone sweeping operation only adds the collector butyl xanthate in an amount of 10 g/t.
  • the selected and selected two of the II zone were only added with inhibitor sodium humate in amounts of 15 g/t and 10 g/t, respectively.
  • the sulphide-copper-cobalt ore beneficiation method has a simple pharmacy system, but the sorting effect is good under the optimized process and the ratio of the medicaments, and the beneficiation process of the method is applied in a copper-cobalt mine.
  • Flotation Zone 1 pays attention to controlling product indicators.
  • Flotation Zone 2 mainly optimizes product recovery rate. By partitioning flotation and dividing tasks, it is a good way to alleviate the contradiction between recovery rate and grade in the ordinary beneficiation process.
  • the target solution is divided to facilitate the control of the indicator.
  • 1 is a diagram showing the relationship between the equipment of the two-zone flotation method of the copper sulfide cobalt ore according to the present invention
  • FIG. 2 is a simplified diagram of a two-zone flotation step of a copper-copper sulfide ore according to the present invention
  • FIG. 3 is a flow chart of a two-zone flotation process of copper sulfide ore according to the present invention
  • the main ore types targeted are mainly copper sulfide cobalt ore, in which the average grade of copper is 1.5%; the average grade of cobalt is 0.5%.
  • the mineralogical characteristics are: the copper mineral in the ore is mainly chalcopyrite, followed by the porphyrite, the chalcopyrite, the rare amount of natural copper and copper blue, etc.; the cobalt mineral is sulphur copper-cobalt ore; other sulfide minerals are mainly Pyrite, etc.; gangue minerals mainly include dolomite, quartz, mica, etc.; ore contains a small amount of carbonaceous matter.
  • the grinding uses a semi-autogenous grinding + ball milling SAB process.
  • the sorting process adopts a flotation process, in which the flotation process adopts district flotation, which is divided into two zones, one zone is mainly used for concentrate index control, and the second zone is used for recovery rate control.
  • the main main processes are as follows:
  • the ore density is 2.73t/m 3 , the looseness coefficient is 1.5-1.7, and the ore moisture content is 2-5%.
  • the coarse crushing station is arranged in the open air as a whole, and the ore from the automobile transportation is directly poured into the mining bin through the original ore sieve.
  • the 1500X8000mm heavy-duty plate feeder is fed into the jaw crusher.
  • the size of the crusher feed port is 850 ⁇ 1100mm, the feed size is 0-750mm, and the maximum product size is 150mm; the coarsely crushed product is transported to the intermediate pile by the 1# belt conveyor;
  • the intermediate ore heap is set as the supply buffer for the sorting process
  • the discharge end is provided with a double-layer cylindrical sieve (the inner sieve size is 20 ⁇ 40mm, and the outer sieve size is 6 ⁇ 15mm).
  • the material under the sieve enters the grinding pump pool and is sent to the hydrocyclone for classification by the slurry pump.
  • the stream product is sent to the flotation, and the sediment is passed into a ball mill for grinding.
  • the cylinder speed is 13r/min and the rotation rate is 75%.
  • the ball mill grinding product enters the grinding pump pool (shared with the semi-self-grinding pumping tank) and is sent to the hydrocyclone by the slurry pump.
  • the overflow product is sent to the flotation, and the sediment is sent to the ball mill for grinding.
  • the hydrocyclone group specification is ⁇ 500x10, the ore slurry volume is 335.7m3/h (considering the fluctuation coefficient), the overflow weight concentration is 30%, and the overflow fineness -0.074mm accounts for 80%.
  • Zone 1 and Zone 2 The flotation operation is divided into two working areas: Zone 1 and Zone 2.
  • the two operating zones each have a mixing tank, which is a 1# mixing drum and a 2# mixing drum.
  • the two zones each produce a concentrate product, respectively.
  • the specific process flow is as follows.
  • Zone 1 The flotation operation in Zone 1 is the process of two coarse and three sweeps.
  • the hydrocyclone overflow slurry enters the 1# mixing tank, which is the starting point of Zone 1.
  • the types and dosages of the added drugs in the rough selection operation were as follows: the inhibitor sodium sulfonate dosage 70g/t, the foaming agent 2# oil dosage 24g/t, and the collector butyl yellow dosage 35g/t.
  • the rough selection of the second working slurry enters the sweeping operation, and the rough selection of the operation and the rough selection of the two operations of the foam enters the selected operation area of Zone 1;
  • the sweeping operation only adds the collector butyl xanthate, the dosage is 25g/t, the foam of the sweeping operation returns to the rough selection operation, and the slurry enters the starting position of the 2nd zone 2# mixing tank;
  • the selected work in Zone 1 is divided into three selections.
  • Select 2 also added only the inhibitor sodium humate in an amount of 20 g/t, and the selected two foams entered the selected three operations.
  • the selected three operations do not add pharmacy, and the selected two and three selected granules are returned to the selected one and the second selected in sequence, and the selected three working foam is the concentrate 1 product.
  • the 2-zone flotation operation is a rough two-sweeping process.
  • the agent in the roughing operation in Zone 2 is added to the 2# mixing tank.
  • the added agent is the collector butyl xanthate and the inhibitor sodium humate, the dosages are 20g/t and 30g/t respectively, and the slurry is fully stirred and then enters. Roughly select a flotation cell.
  • the slurry of the rough selection operation enters the sweeping and selection operation, and the slurry enters the selected operation area of Zone 2.
  • the slurry from the sweeping operation enters the sweeping operation and the foam is returned to the roughing operation.
  • the second cleaning operation does not add flotation reagents, sweeps the second slurry into the tailings pond, and transports it to the tailings thickener through the slurry pump.
  • the selected work in Zone 2 is divided into three selections.
  • a selected operating foam enters the selected two operations, and the slurry is returned to the roughing operation. Both the selected one and the selected two were only added with the inhibitor sodium humate in amounts of 15 g/t and 10 g/t, respectively.
  • the selected two working foams enter the selected three, and the selected two and selected three jobs are returned sequentially. To select one and select two.
  • the three selected foams are concentrate 2 products.
  • the production indicators are as follows:
  • this method is used to achieve efficient separation of copper sulphide ore.
  • the reform process can also optimize the pharmaceutical system, and can also carry out mixed sorting of copper sulfide cobalt ore and copper oxide cobalt ore for the treatment of partial oxidation ore.
  • the treatment volume reaches 3000t/d, and when the average grade of the original ore is Cu1.5% and Co0.5%, it can produce copper sulfide with a Cu grade of 23% and a Co grade of 8%. Concentrate, Cu recovery rate of more than 90%, cobalt recovery rate of more than 80%.

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  • Engineering & Computer Science (AREA)
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Abstract

一种用于工业生产的硫化铜钴矿双区浮选方法，分选过程采用浮选工艺流程，其中浮选流程采用分区浮选，分为两个区，1区主要用于精矿指标控制，2区用于回收率的控制；所述方法在工业生产范畴内实现同时对硫化铜钴矿中的铜、钴元素进行高效回收，利用双区分步浮选的方法，有效缓解了选矿领域内关于回收率和精矿品位的矛盾，提高了质量控制的效率，大大提高了回收率和精矿品指标的优化效率，实现品位和回收率相对分离控制。

Description

一种用于工业生产的硫化铜钴矿双区浮选方法 技术领域
本发明属于矿物加工工程技术领域，具体涉及一种用于工业生产的硫化铜钴矿双区浮选方法。
背景技术
硫化铜钴矿的选矿，目前国内鲜有成熟的工业应用。回收率和精矿品位作为选矿领域中相互联系，相互矛盾的两个指标，存在品位和回收率不易于相对分离控制的问题。
发明内容
本发明解决的技术问题是，提供一种用于工业生产的硫化铜钴矿双区浮选方法，在工业生产范畴内实现同时对硫化铜钴矿中的铜、钴元素进行高效回收。利用双区分步浮选的方法，有效缓解了领域内关于回收率和精矿品位的矛盾，提高了质量控制的效率。通过该方法大大提高了回收率和精矿品指标的优化效率，实现品位和回收率相对分离控制。
本发明的技术方案：
一种用于工业生产的硫化铜钴矿双区浮选方法，包括如下步骤
1)步骤一：粗碎
汽车运输来的矿石经原矿格筛直接倒入矿仓，经过重型板式给料机运送到颚式破碎机，粗碎产物经胶带输送机转运至中间矿堆；
2)步骤二：中间矿堆堆存
由于粗碎的作业制度与分选作业制度不同，为保证破碎检修停车期间供矿，设置中间矿堆作为分选流程的供矿缓冲；
3)步骤三：磨矿
将中间矿堆的矿石通过皮带运输至半自磨机进行磨矿，筛下物料进入磨矿泵池后经渣浆泵送入水力旋流器分级，沉沙进入球磨机磨矿，球磨机磨矿产物进入磨矿泵池后，经渣浆泵送入水力旋流器分级，溢流产物送入浮选，沉沙继续进入球磨机磨矿；
4)步骤四：浮选
采用分区浮选，分为两个区，Ⅰ区主要用于精矿指标控制，Ⅱ区用于回收率的控制，Ⅰ区和Ⅱ区两个作业区各有一个搅拌桶，分别为1#搅拌桶和2#搅拌桶，两个区各产出一种精矿产品，分别为精矿1和精矿2；
Ⅰ区浮选作业采用二粗一扫三精的工艺流程
Ⅰ区粗选一的药剂加在1#搅拌桶，当水力旋流器溢流矿浆进入1#搅拌桶，即Ⅰ区的起始点，待矿浆充分搅匀后进入粗选一作业浮选槽，粗选一作业矿浆进入粗选二作业，粗选二作业矿浆进入扫选作业，而粗选一作业和粗选二作业的泡沫进入Ⅰ区的精选作业区；扫选作业的泡沫返回到粗选二作业，矿浆进入到Ⅱ区的起始位置2#搅拌桶；Ⅰ区精选作业分为三次精选；精选一泡沫进入精选二作业，矿浆返回粗选一作业，精选二泡沫进入精选三作业，精选三作业不添加药剂，精选二和精选三作业的矿浆分别顺序返回至精选一和精选二，精选三作业的泡沫即为精矿1产品；
所述Ⅰ区粗选一的药剂加在1#搅拌桶，其中pH调整剂石灰用量600g/t，保证矿浆pH＝9.5～10.0，抑制剂腐植酸钠用量150g/t，起泡剂2#油用量70g/t，捕收剂丁基黄药用量60g/t。
所述Ⅰ区粗选二作业添加药剂种类及用量为：抑制剂腐植酸钠用量70g/t， 起泡剂2#油用量24g/t，捕收剂丁基黄药用量35g/t。
所述Ⅰ区扫选作业仅添加捕收剂丁基黄药，用量为25g/t。
所述Ⅰ区精选一作业仅添加抑制剂腐植酸钠，用量为40g/t。
所述Ⅰ区精选二作业仅添加抑制剂腐植酸钠，用量为20g/t。
Ⅱ区浮选作业为一粗二扫三精的工艺流程
Ⅱ区粗选作业的药剂加在2#搅拌桶，待矿浆充分搅匀后进入粗选一浮选槽，粗选作业的矿浆进入扫选一作业，矿浆进入Ⅱ区精选作业区，扫选一作业的矿浆进入扫选二作业，泡沫返回至粗选作业，扫选二作业不添加浮选药剂，扫选二矿浆进入尾矿池，通过矿浆泵输送至尾矿浓密机；Ⅱ区精选作业分为三次精选，精选一作业泡沫进入精选二作业，矿浆返回至粗选作业，精选二作业泡沫进入精选三，精选二和精选三作业的矿浆分别顺序返回至精选一和精选二，精选三的泡沫即为精矿2产品。
所述Ⅱ区粗选一的药剂为捕收剂丁基黄药和抑制剂腐植酸钠，用量分别为20g/t和30g/t。
所述Ⅱ区扫选一作业仅添加捕收剂丁基黄药，用量为10g/t。
所述Ⅱ区精选一和精选二均只添加抑制剂腐植酸钠，用量分别为15g/t和10g/t。
本发明的有益效果：
该种硫化铜钴矿选矿方法药剂制度简单，但是在优化的流程和药剂配比的情况下分选效果良好，通过在某铜钴矿山应用该方法的选矿流程。浮选1区注意控制产品指标，浮选2区主要优化产品回收率，通过分区浮选，划分任务，很好的缓解了普通选矿流程中存在的回收率和品位的矛盾，使这两种 目标的解决方案划分开来，有利于指标的控制。
附图说明
本发明共有3幅附图
图1为本发明硫化铜钴矿双区浮选方法设备形象联系图；
图2为本发明硫化铜钴矿双区浮选步骤简易图；
图3为本发明硫化铜钴矿双区浮选工艺流程图；
具体实施方式
下面结合附图和最佳实施例对本发明进一步详细地描述。
实施例1
针对的原矿类型主要为硫化铜钴矿，其中铜元素平均品位1.5％；钴元素平均品位0.5％。矿物学特性为：矿石中铜矿物主要为黄铜矿，其次为斑铜矿、辉铜矿，很少量的自然铜及铜蓝等；钴矿物为硫铜钴矿；其它硫化矿物主要为黄铁矿等；脉石矿物主要有白云石、石英、云母等；矿石中含有少量的碳质物。
磨矿采用半自磨+球磨的SAB工艺流程，
分选过程采用浮选工艺流程，其中浮选流程采用分区浮选，分为两个区，1区主要用于精矿指标控制，2区用于回收率的控制。
主要主要工艺如下：
1.粗碎
原矿密度：2.73t/m3，松散系数1.5-1.7，矿石含水率2-5％。
粗碎站整体露天布置，汽车运输来的矿石经原矿格筛直接倒入矿仓。
经过1500X8000mm重型板式给料机給入到颚式破碎机。
破碎机给矿口尺寸850×1100mm，给料粒度0-750mm，最大产品粒度为150mm；粗碎产物经1#胶带输送机转运至中间矿堆；
2.中间矿堆
由于破碎的作业制度与分选作业制度不同，为保证破碎检修停车期间供矿，设置中间矿堆作为分选流程的供矿缓冲；
中间矿堆主要设备
Figure PCTCN2017102857-appb-000001
3.磨矿
来于半自磨给矿粒度250-0mm，P80＝175mm；排矿粒度要求-2mm≥80％，磨矿浓度(平均)75％-80％。排料端设双层圆筒筛(内层筛孔尺寸20×40mm、外层筛孔尺寸6×15mm)筛下物料进入磨矿泵池后经渣浆泵送入水力旋流器分级，溢流产物送入浮选，沉沙进入球磨机磨矿。
球磨给矿粒度P80＝2mm，磨矿浓度(平均)75％-80％，循环负荷300％。筒体转速13r/min，转速率75％。球磨机磨矿产物进入磨矿泵池(与半自磨共用排矿泵池)后经渣浆泵送入水力旋流器分级，溢流产物送入浮选，沉沙进入球磨机磨矿。
水力旋流器组规格为Φ500x10，给矿矿浆量335.7m3/h(考虑波动系数)，溢流重量浓度30％，溢流细度-0.074mm占80％。
磨矿车间主要设备
Figure PCTCN2017102857-appb-000002
Figure PCTCN2017102857-appb-000003
4.浮选
浮选作业分为1区和2区两个作业区，两个作业区各有一个搅拌桶，分别为1#搅拌桶和2#搅拌桶，两个区各产出一种精矿产品，分别为精矿1和精矿2。具体工艺流程如下所述。
1区浮选作业为二粗一扫三精的工艺流程。
水力旋流器溢流矿浆进入1#搅拌桶，即1区的起始点。
1区粗选一药剂加在1#搅拌桶，其中pH调整剂石灰用量600g/t，保证矿浆pH＝9.5～10.0，抑制剂腐植酸钠用量150g/t，起泡剂2#油用量70g/t，捕收剂丁基黄药用量60g/t，待矿浆充分搅匀后进入粗选一作业浮选槽。粗选一作业矿浆进入粗选二作业；
粗选二作业添加药剂种类及用量为：抑制剂腐植酸钠用量70g/t，起泡剂2#油用量24g/t，捕收剂丁基黄药用量35g/t。
粗选二作业矿浆进入扫选作业，粗选一作业和粗选二作业的泡沫进入1区的精选作业区；
扫选作业仅添加捕收剂丁基黄药，用量为25g/t，扫选作业的泡沫返回到粗选二作业，矿浆进入到2区的起始位置2#搅拌桶；
1区精选作业分为三次精选。
精选一作业仅添加抑制剂腐植酸钠，用量为40g/t，精选一泡沫进入精选二作业，矿浆返回粗选一作业。
精选二同样仅添加抑制剂腐植酸钠，用量为20g/t，精选二泡沫进入精选三作业。
精选三作业不添加药剂，精选二和精选三作业的矿浆分别顺序返回至精选一和精选二，精选三作业的泡沫即为精矿1产品。
2区浮选作业为一粗二扫三精的工艺流程。
2区粗选作业的药剂加在2#搅拌桶，添加的药剂为捕收剂丁基黄药和抑制剂腐植酸钠，用量分别为20g/t和30g/t，待矿浆充分搅匀后进入粗选一浮选槽。粗选作业的矿浆进入扫选一作业，矿浆进入2区精选作业区。
扫选一作业仅添加捕收剂丁基黄药，用量为10g/t。扫选一作业的矿浆进入扫选二作业，泡沫返回至粗选作业。扫选二作业不添加浮选药剂，扫选二矿浆进入尾矿池，通过矿浆泵输送至尾矿浓密机。
2区精选作业分为三次精选。
精选一作业泡沫进入精选二作业，矿浆返回至粗选作业。精选一和精选二均只添加抑制剂腐植酸钠，用量分别为15g/t和10g/t。
精选二作业泡沫进入精选三，精选二和精选三作业的矿浆分别顺序返回 至精选一和精选二。
精选三的泡沫即为精矿2产品。
浮选车间主要设备
名称 主要技术参数
搅拌槽(硫化矿浮选) Φ3.5×4.0m
搅拌槽(氧化矿浮选) Φ4.0×4.5m
浮选机 XCF-30
浮选机 KYF-30
浮选机 XCF-8
浮选机 KYF-8
渣浆泵(硫化矿浮选精矿) 80/65
渣浆泵(氧化矿浮选精矿) 50/40
渣浆泵(尾矿) 250/200
管道取样机(硫化铜钴精矿) DN200
管道取样机(氧化铜钴精矿) DN200
管道取样机(浮选尾矿) DN350
鼓风机 450m3,50kpa
液下泵(事故池) 65(出口)
液下泵(尾矿坑内) 65(出口)
硫化矿精选尾矿泵池液位 0～1.5m
硫化矿浮选精矿泵池液位 0～1.5m
氧化矿浮选精矿泵池液位 0～1.5m
浮选尾矿泵池液位 0～2.5m
鼓风机出口风压 0～0.05MPa
生产指标如下表：
Figure PCTCN2017102857-appb-000004
Figure PCTCN2017102857-appb-000005
从生产结果来看，使用该方法实现了硫化铜钴矿的高效分选。
最终，通过该方法在硫化铜钴矿原矿Cu品位1.5％，Co品位0.5％的条件下，可以生产出Cu品位23％，Co品位8％的硫化铜钴精矿，Cu回收率达到90％以上，钴回收率达到80％以上。同时，改流程通过又对药剂制度的优化，还可以进行硫化铜钴矿和氧化铜钴矿的混合分选，用于处理部分氧化矿。
采用图3的工艺流程，处理量达到3000t/d，实现在原矿品平均品位为Cu1.5％，Co0.5％的情况下，可以生产出Cu品位23％，Co品位8％的硫化铜钴精矿，Cu回收率达到90％以上，钴回收率达到80％以上。

Claims (9)

  1. 一种用于工业生产的硫化铜钴矿双区浮选方法，其特征在于，包括如下步骤
    1)步骤一：粗碎
    汽车运输来的矿石经原矿格筛直接倒入矿仓，经过重型板式给料机运送到颚式破碎机，粗碎产物经胶带输送机转运至中间矿堆；
    2)步骤二：中间矿堆堆存
    由于粗碎的作业制度与分选作业制度不同，为保证破碎检修停车期间供矿，设置中间矿堆作为分选流程的供矿缓冲；
    3)步骤三：磨矿
    将中间矿堆的矿石通过皮带运输至半自磨机进行磨矿，筛下物料进入磨矿泵池后经渣浆泵送入水力旋流器分级，沉沙进入球磨机磨矿，球磨机磨矿产物进入磨矿泵池后，经渣浆泵送入水力旋流器分级，溢流产物送入浮选，沉沙继续进入球磨机磨矿；
    4)步骤四：浮选
    采用分区浮选，分为两个区，Ⅰ区主要用于精矿指标控制，Ⅱ区用于回收率的控制，Ⅰ区和Ⅱ区两个作业区各有一个搅拌桶，分别为1#搅拌桶和2#搅拌桶，两个区各产出一种精矿产品，分别为精矿1和精矿2；
    Ⅰ区浮选作业采用二粗一扫三精的工艺流程
    Ⅰ区粗选一的药剂加在1#搅拌桶，当水力旋流器溢流矿浆进入1#搅拌桶，即Ⅰ区的起始点，待矿浆充分搅匀后进入粗选一作业浮选槽，粗选一作业矿浆进入粗选二作业，粗选二作业矿浆进入扫选作业，而粗选一作业和粗 选二作业的泡沫进入Ⅰ区的精选作业区；扫选作业的泡沫返回到粗选二作业，矿浆进入到Ⅱ区的起始位置2#搅拌桶；Ⅰ区精选作业分为三次精选；精选一泡沫进入精选二作业，矿浆返回粗选一作业，精选二泡沫进入精选三作业，精选三作业不添加药剂，精选二和精选三作业的矿浆分别顺序返回至精选一和精选二，精选三作业的泡沫即为精矿1产品；
    Ⅱ区浮选作业为一粗二扫三精的工艺流程
    Ⅱ区粗选作业的药剂加在2#搅拌桶，待矿浆充分搅匀后进入粗选一浮选槽，粗选作业的矿浆进入扫选一作业，矿浆进入Ⅱ区精选作业区，扫选一作业的矿浆进入扫选二作业，泡沫返回至粗选作业，扫选二作业不添加浮选药剂，扫选二矿浆进入尾矿池，通过矿浆泵输送至尾矿浓密机；Ⅱ区精选作业分为三次精选，精选一作业泡沫进入精选二作业，矿浆返回至粗选作业，精选二作业泡沫进入精选三，精选二和精选三作业的矿浆分别顺序返回至精选一和精选二，精选三的泡沫即为精矿2产品。
  2. 根据权利要求1所述的方法，其特征在于，所述Ⅰ区粗选一的药剂加在1#搅拌桶，其中pH调整剂石灰用量600g/t，保证矿浆pH＝9.5～10.0，抑制剂腐植酸钠用量150g/t，起泡剂2#油用量70g/t，捕收剂丁基黄药用量60g/t。
  3. 根据权利要求1所述的方法，其特征在于，所述Ⅰ区粗选二作业添加药剂种类及用量为：抑制剂腐植酸钠用量70g/t，起泡剂2#油用量24g/t，捕收剂丁基黄药用量35g/t。
  4. 根据权利要求1所述的方法，其特征在于，所述Ⅰ区扫选作业仅添加捕收剂丁基黄药，用量为25g/t。
  5. 根据权利要求1所述的方法，其特征在于，所述Ⅰ区精选一作业仅添 加抑制剂腐植酸钠，用量为40g/t。
  6. 根据权利要求1所述的方法，其特征在于，所述Ⅰ区精选二作业仅添加抑制剂腐植酸钠，用量为20g/t。
  7. 根据权利要求1所述的方法，其特征在于，所述Ⅱ区粗选一的药剂为捕收剂丁基黄药和抑制剂腐植酸钠，用量分别为20g/t和30g/t。
  8. 根据权利要求1所述的方法，其特征在于，所述Ⅱ区扫选一作业仅添加捕收剂丁基黄药，用量为10g/t。
  9. 根据权利要求1所述的方法，其特征在于，所述Ⅱ区精选一和精选二均只添加抑制剂腐植酸钠，用量分别为15g/t和10g/t。
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