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Production online flotation arsine-reduction method for high arsenic-containing copper concentrate

A technology of copper concentrate and flotation, which is applied in the direction of solid separation, etc., can solve the problems of large metal loss, increased sorting cost, and high labor intensity of copper concentrate, and achieves the reduction of arsenic content, treatment cost, and operating cost low effect

Inactive Publication Date: 2017-05-31
YUNNAN TIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the work of the copper concentrate re-selection process is repeated, and the production is interrupted, thereby increasing the corresponding separation cost, and the labor intensity is high, and the metal loss of the copper concentrate is large, and the metal loss rate reaches more than 5%.

Method used

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  • Production online flotation arsine-reduction method for high arsenic-containing copper concentrate
  • Production online flotation arsine-reduction method for high arsenic-containing copper concentrate
  • Production online flotation arsine-reduction method for high arsenic-containing copper concentrate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Yunnan Gejiu Yunxi Kafang Branch Co., Ltd. 600 tons / day tin, copper, sulfur and arsenic symbiotic polymetallic sulfide ore, and the copper concentrate production line of the symbiotic sulfide ore process reduces arsenic. The raw ore composition of the symbiotic sulfide ore is shown in Table 1:

[0031] Table 1. Multi-element analysis (%)

[0032] name Cu S As grade(%) 2.083 18.81 1.090

[0033] The production line flotation arsenic reduction method of this copper concentrate is as follows:

[0034] (1) Copper-sulfur-arsenic mixed flotation process is used to produce mixed flotation high-arsenic copper rough concentrate, and the tailings enter the gravity separation process; copper-sulfur-arsenic mixed flotation process includes roughing, secondary sweeping Separation and detinning flotation, the reagent system is as follows:

[0035] Rough selection: mixed base xanthate 120g / t, 2# oil 45g / t;

[0036] One sweep: mixed base xanthate 80g / t, 2#...

Embodiment 2

[0049] Yunnan Wenshan Hualian Zinc and Indium Co., Ltd. Tongjie Ore Concentrator Copper Street Concentrator Copper Concentrate Production Line Reduces Arsenic in Single Copper Sulfide Ore Process. The composition of single copper sulfide ore is shown in Table 3:

[0050] Table 3. Multi-element analysis (%)

[0051]

[0052]

[0053] The copper oxidation rate of the mine is as high as 24.95%.

[0054] The on-line flotation method for reducing arsenic in the production of this single copper sulfide ore is as follows:

[0055] (1) Copper-sulfur-arsenic mixed flotation process is used to produce mixed flotation high-arsenic copper rough concentrate, and the tailings enter the gravity separation process; copper-sulfur-arsenic mixed flotation process includes roughing, secondary sweeping Separation and detinning flotation, the reagent system is as follows:

[0056] Rough selection: mixed base xanthate 150g / t, 2# oil 60g / t;

[0057] One sweep: mixed base xanthate 60g / t, 2# o...

Embodiment 3

[0070] The production line flotation arsenic reduction method of high-arsenic copper concentrate has the following steps:

[0071] (1) Copper-sulfur-arsenic mixed flotation process is used to produce mixed flotation high-arsenic copper rough concentrate, and the tailings enter the gravity separation process; copper-sulfur-arsenic mixed flotation process includes roughing, secondary sweeping Separation and detinning flotation, the reagent system is as follows:

[0072] Rough selection: mixed base xanthate 60g / t, 2# oil 25g / t;

[0073] One sweep: mixed base xanthate 40g / t, 2# oil 20g / t;

[0074] Secondary sweeping: mixed base xanthate 25g / t, 2# oil 5g / t;

[0075] Detin flotation: blank;

[0076] (2) The high-arsenic copper coarse concentrate of mixed flotation is classified by long cone cyclone, and the small steel forging is finely ground, and the grinding fineness is r -200 Mesh>90%, grinding concentration is 45%; add lime 2000g / t, sodium humate 180g / t to the mill, keep th...

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Abstract

The invention discloses a production online flotation arsine-reduction method for high arsenic-containing copper concentrate. Firstly, bulk flotation high arsenic-containing copper concentrate is produced through a copper-sulfur-arsenic bulk flotation technique, and tailings are treated through a tin re-flotation technique; before copper-sulfur-arsenic separation flotation for arsine reduction, a long-conical hydrocyclone is adopted for slight steel forging and classified fine grinding, inhibitors are added to achieve effective monomer separation, analytic reagent removal and reinhibition; and finally, production online arsine reduction is conducted through the copper-sulfur-arsenic separation flotation arsine-reduction technique, low arsenic-containing copper concentrate and high arsenic-containing copper-sulfur-arsenic separation sulfur concentrate are produced, the propose of production online direct flotation arsine reduction in the production process of tin-copper-sulfur-arsenic symbiotic complex refractory multi-metal sulfide ores is achieved. According to the production online flotation arsine reduction method for the high arsenic-containing copper concentrate, the steps of the copper concentrate arsine reduction technique are simplified, operation is easy, the production online flotation arsine reduction method is practical, operation cost is low, the arsenic content of the copper concentrate is low, copper metal loss in the arsine reduction technological process is greatly reduced, and the recycling rate of copper and tin metal is increased.

Description

technical field [0001] The invention relates to the technical field of high-arsenic copper concentrate flotation methods. Background technique [0002] The types of copper deposits mainly include porphyry type, skarn type, basalt type, layered type, volcanic sedimentary type and copper-nickel sulfide type. There are chalcopyrite, chalcocite, bornite, copper blue and so on. The arsenic-containing minerals in copper ore are mainly arsenopyrite, also known as arsenic pyrite (FeAsS), orthorhombic arsenite (FeAs2), arsenic copper ore (Cu3AsS4) and arsenic tetrahedrite (Cu8As2S7, variable), etc. They are often associated with Copper minerals are closely symbiotic, and their physical and chemical properties are similar to copper minerals. Therefore, in the beneficiation of copper sulfide minerals, the conventional beneficiation reagent system and beneficiation method will often enrich the arsenic-containing minerals and copper minerals simultaneously, and eventually make the arse...

Claims

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Application Information

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IPC IPC(8): B03B9/00
CPCB03B9/00
Inventor 袁经中陈绍伟陈红兵赵荣尹红兵陈明波李燕华杨永林杨缘
Owner YUNNAN TIN
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