Ore dressing method of pyrite

A mineral processing method and pyrite technology, applied in flotation, solid separation, grain processing, etc., can solve the problem of large consumption of butyl xanthate collector, unsatisfactory gravity separation effect, unfavorable separation of sulfide ore and other problems, to achieve the effect of improving buoyancy, reducing the dosage of chemicals, and saving the dosage of acid

Active Publication Date: 2019-07-09
迁安市永德元工贸有限公司
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Problems solved by technology

[0002] my country is rich in pyrite resources, which are the most widely distributed in my country's non-ferrous metal deposits and contain more sulfur. However, there are many lean ores and few rich ores in my country. It is difficult to mine and there are many types of deposits. When pyrite is exposed to gas or liquid Oxidation is easy to occur in the phase, and the iron oxide or hydroxide that occurs in this oxidation covers the surface of pyrite, which is not conducive to the separation with other sulfide ores
[0003] The sorting process of pyrite is mostly flotation, and a few times is gravity separation. When there is a large difference in specific gravity between pyrite and gangue minerals, when the sorting coefficient is higher than 1.75, it belongs to coarse. Granular pyrite is generally separated by gravity separation. For pyrite with fine particle size, the gravity separation effect is not ideal. Generally, flotation is used for separation. For pyrite with uneven thickness, Generally, the combined method of re-selection and flotation is used for sorting
[0004] Compared with other beneficiation methods, gravity separation has the advantages of lower cost, less environmental pollution, and simple equipment operation. The disadvantage is that the recovery rate is not high; a large amount of sulfuric acid is consumed in the single flotation process, and the butyl xanthate capture The amount of collecting agent is also consumed, which has a bad impact on the environment. At the same time, the corrosion and aging of the equipment are also serious.

Method used

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  • Ore dressing method of pyrite
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  • Ore dressing method of pyrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0035] (1) Get 100g pyrite and add mercaptoethanol, adjust pH=11, adopt ceramic ball medium to carry out grinding process, the quality of grinding fineness less than 0.074mm is 80% of the pyrite quality that gets;

[0036] (2) Add water to the raw ore grinding obtained in step (1) to obtain raw ore slurry, wherein the ratio of ore amount to water is 1:2.2;

[0037] (3) Carry out rough separation to the ore slurry that step (2) obtains, add butyl xanthate, No. 2 oil, carry out ultrasonic treatment, obtain rough separation sulfur ore and tailings, wherein butyl xanthate is 180g / t, No. 2 The oil is 30g / t, the ultrasonic power is 70W, and the action time is 5min;

[0038] (4) Add fluorine-containing acidic waste water to the tailings obtained in step (3), and adjust the pH to be 6;

[0039] (5) Carry out secondary roughing in step (4), add butyl xanthate, No. 2 oil, carry out ultrasonic treatment, obtain roughing sulfur ore and tailings, wherein butyl xanthate is 90g / t, No. 2 Th...

Embodiment 4-6

[0049] (1) Get 100g pyrite and add mercaptoethanol, adjust pH=12, adopt porcelain ball medium to carry out grinding process, the quality of grinding fineness less than 0.074mm is 75% of the pyrite quality that gets;

[0050] (2) Add water to the raw ore grinding obtained in step (1) to obtain raw ore slurry, wherein the ratio of ore amount and water is 1:2;

[0051] (3) Carry out rough separation to the ore slurry that step (2) obtains, add butyl xanthate, No. 2 oil, carry out ultrasonic treatment, obtain rough separation sulfur ore and tailings, wherein butyl xanthate is 190g / t, No. 2 The oil is 38g / t, the ultrasonic power is 75W, and the action time is 5min;

[0052] (4) Add fluorine-containing acidic waste water to the tailings obtained in step (3), and adjust the pH to 5.5;

[0053](5) Carry out secondary roughing in step (4), add butyl xanthate, No. 2 oil, carry out ultrasonic treatment, obtain roughing sulfur ore and tailings, wherein butyl xanthate is 95g / t, No. 2 The...

Embodiment 7-9

[0062] (1) Get 100g pyrite and add mercaptoethanol, adjust pH11.5, adopt porcelain ball medium to carry out grinding process, the quality of grinding fineness less than 0.074mm is 85% of the pyrite quality that gets;

[0063] (2) Add water to the raw ore grinding obtained in step (1) to obtain raw ore slurry, wherein the ratio of ore amount and water is 1:2.5;

[0064] (3) Carry out rough separation to the ore slurry that step (2) obtains, add butyl xanthate, No. 2 oil, carry out ultrasonic treatment, obtain rough separation sulfur ore and tailings, wherein butyl xanthate is 200g / t, No. 2 The oil is 40g / t, the ultrasonic power is 80W, and the action time is 5min;

[0065] (4) Add fluorine-containing acidic waste water to the tailings obtained in step (3), and adjust the pH to 5.5;

[0066] (5) Carry out secondary roughing in step (4), add butyl xanthate, No. 2 oil, carry out ultrasonic treatment, obtain roughing sulfur ore and tailings, wherein butyl xanthate is 95g / t, No. 2 ...

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Abstract

The invention belongs to the technical field of metal mineral resources development, in particular to an ore dressing method of pyrite. The method comprises the following steps: taking pyrite, addingdepressant, adjusting PH, grinding; adding water to obtain raw ore slurry; roughing the slurry, adding butyl xanthate and No.2 oil, and performing ultrasonic treatment to obtain roughed sulfur ore andtailings; adding activator into tailings, carrying out secondary roughing, adding butyl xanthate and No.2 oil, and carrying out ultrasonic treatment to obtain roughed sulfur ore and tailings; treating the roughed sulphur ore by ultrasonic wave, and repeatedly cleaning the obtained tailings twice, and scavenging the tailings, adding butyl xanthate and No.2 oil to the tailings for ultrasonic wave treatment, and continuously roughing and scavenging the obtained tailings once. By this method, the production cost can be reduced and the recovery rate can be increased, a good application prospect can be obtained.

Description

technical field [0001] The invention belongs to the technical field of metal mineral resources development, and in particular relates to a method for beneficiating pyrite. Background technique [0002] my country is rich in pyrite resources, which are the most widely distributed in my country's non-ferrous metal deposits and contain more sulfur. However, there are many lean ores and few rich ores in my country. It is difficult to mine and there are many types of deposits. When pyrite is exposed to gas or liquid Oxidation is easy to occur in the phase, and the iron oxide or hydroxide produced by this oxidation covers the surface of pyrite, which is not conducive to the separation with other sulfide ores. [0003] The sorting process of pyrite is mostly flotation, and a few times is gravity separation. When there is a large difference in specific gravity between pyrite and gangue minerals, when the sorting coefficient is higher than 1.75, it belongs to coarse. Granular pyrite ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B02C17/20B03D101/06B03D103/02
CPCB02C17/20B03D1/012B03D2201/06B03D2203/02
Inventor 马学文赵付平
Owner 迁安市永德元工贸有限公司
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