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A kind of separation method of arsenite and galena

A technology for the separation of arsenite and tetrahedrite, which is applied in the field of copper-lead mixed concentrate separation and beneficiation, can solve the problems of unsatisfactory separation indicators, and achieve the effects of high efficiency and environmental protection of chemicals, reasonable process flow and low cost

Active Publication Date: 2018-03-06
HUNAN RES INST FOR NONFERROUS METALS
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Problems solved by technology

In recent years, with the continuous increase of environmental protection pressure, this method has been gradually replaced by the lead-suppressed floating copper method. The lead-suppressed floating copper mainly uses CMC, starch or dichromate as the inhibitor of galena, but these inhibitors It also has a good inhibitory effect on arsenic tetrahedrite, so for the copper-lead mixed concentrate with high arsenic tetrahedrite content, its separation index is often not ideal

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  • A kind of separation method of arsenite and galena

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Embodiment Construction

[0015] The acidic LR inhibitor used in this embodiment is obtained by stirring and mixing sulfuric acid and LS at a mass ratio of 1: (3 to 5) at room temperature; LS is obtained by mixing sodium phosphate solution and carboxymethyl cellulose at a mass ratio of 1 : (1~6) obtained by stirring and mixing at 45~65°C; methyl cellulose is a light yellow fibrous powder prepared from reeds grown in the Dongting Lake area of ​​Hunan Province through the water-enchanting process, and its molecular formula is: C 6 h 7 o 2 (OH) 2.5 (OCH 2 COONa) 1 / 2 ] 70.

[0016] This embodiment provides a method for separating arsenite concentrate and lead concentrate from copper-lead mixed concentrate (mixed ore sample of arsenite and galena), which specifically includes the following steps:

[0017] (1) Aeration and regrinding: import the copper-lead mixed concentrate (the mixed ore sample of arsenite and galena) into the ball mill, fill in the air with a pressure of 1-3MPa, and grind the ore to ...

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Abstract

The invention discloses a separation method for tennantite and galena. The method includes the following steps that firstly, inflation and regrinding are conducted; secondly, lead concentrates A are obtained through screening and classifying; thirdly, chemical agent adding and size mixing are conducted; and fourthly, fast flotation separation is conducted so that lead concentrates B and tennantite concentrates can be obtained through floatation. By means of the method, selective ore grinding of the tennantite and the galena is achieved through inflation and regrinding, acid LR serves as the inhibitor of the galena, a beneficiation effect is good, high efficiency and environment friendliness are achieved, and the tennantite and the galena can be effectively separated.

Description

technical field [0001] The invention belongs to the field of separation and dressing of copper-lead mixed concentrate, and in particular relates to a method for separating arsenite and galena. Background technique [0002] The beneficiation and separation of copper-lead mixed concentrate has always been a popular research direction for beneficiation workers. At present, the research on copper-lead separation at home and abroad mainly refers to the separation of chalcopyrite and galena. There are few studies on the separation of lead ore. [0003] Since arsenite is more difficult to float and easier to suppress than chalcopyrite, in the early production practice, the mixed flotation method was mainly used to obtain a copper-lead mixed concentrate for copper and lead ores associated with arsenite. , and then the mixed concentrate is separated by adding highly toxic agents such as cyanide to separate copper and lead minerals. In recent years, with the continuous increase of e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03D1/018B03D101/06
CPCB03B7/00B03D1/018B03D2201/06
Inventor 魏党生叶从新骆任韦华祖张丽敏郭玉武江锋蒋素芳朱永筠
Owner HUNAN RES INST FOR NONFERROUS METALS
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