Method for desulphurizing cassiterite polymetallic sulphide ore tailing by flotation step by step

A technology for sulfide ores and polymetals, applied in flotation, solid separation, etc., can solve the problems of many types of chemicals, affecting the sorting effect, easy to form sludge, etc., to reduce the type and quantity of chemicals, avoid inadvertent loss, reduce The effect of cassiterite inclusions

Inactive Publication Date: 2010-08-11
GUANGXI UNIV
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Problems solved by technology

[0002] In the tailings containing cassiterite polymetallic sulfide ore, due to the uneven mineral particle size composition, the valuable minerals mostly exist in fine and microfine particles, which are easy to interact with each other during the separation process. Coarse-grained sulfide ore leads to the loss of sulfide ore in cassiterite concentrate. If fully floating sulfide ore is used to recover ca...

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  • Method for desulphurizing cassiterite polymetallic sulphide ore tailing by flotation step by step

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Mineral raw materials:

[0022] The raw materials used are tailings containing low-grade cassiterite and sulfide ores, which contain Sn0.54%, Pb0.47%, Zn2.10%, and Sb0.38%. The recovered minerals in the tailings are mainly cassiterite and brittle sulfur Antimonite, sphalerite, etc.

[0023] The above mineral raw materials are desulfurized and flotation step by step according to the following steps:

[0024] 1.1 Flotate the sulfide ore with good floatability first, the pH value of the pulp is 7 during flotation, and then add butyl xanthate and 2 # The oil is used to recover sulfide ores with good buoyancy, dosage: butyl xanthate 200g / t, 2 # Oil 80g / t, butyl xanthate first prepared into 1wt% aqueous solution, 2 # The oil is added directly to the stock solution.

[0025] The mixed concentrate of sulfide ore containing Sn0.20%, Pb2.67%, Sb2.33%, Zn16.04% was obtained by flotation, and the recoveries of tin, lead, antimony and zinc were respectively Sn9.57%, Pb59.25 %, ...

Embodiment 2

[0035] Mineral raw materials:

[0036] The raw materials used are tailings containing low-grade cassiterite and sulfide ores, which contain Sn0.60%, Pb0.50%, Zn2.35%, and Sb0.45%. The recovered minerals in the tailings are mainly cassiterite and brittle sulfur Antimonite, sphalerite, etc.

[0037] The above mineral raw materials are desulfurized and flotation step by step according to the following steps:

[0038] 1.1 Flotate the sulfide ore with good floatability first, the pH value of the pulp is 7 during flotation, and then add butyl xanthate and 2 # The oil is used to recover sulfide ores with good buoyancy, dosage: butyl xanthate 300g / t, 2 # Oil 100g / t.

[0039] Butyl xanthate is first prepared into 2wt% aqueous solution, 2 # The oil is added directly to the stock solution.

[0040] Flotation obtained sulfide ore mixed concentrate containing Sn0.20%, Pb2.87%, Sb2.56%, Zn16.53%, the recoveries of tin, lead, antimony and zinc were Sn9.67%, Pb61.03 %, Sb61.52%, Zn65.67...

Embodiment 3

[0050] Mineral raw materials:

[0051] The raw materials used are tailings containing low-grade cassiterite and sulfide ores, which contain Sn0.57%, Pb0.48%, Zn2.21%, Sb0.41%. The recovered minerals in the tailings are mainly cassiterite and brittle sulfur Antimonite, sphalerite, etc.

[0052] The above mineral raw materials are desulfurized and flotation step by step according to the following steps:

[0053] 1.1 Flotate the sulfide ore with good floatability first, the pH value of the pulp is 7 during flotation, and then add butyl xanthate and 2 # The oil is used to recover sulfide ores with good buoyancy, dosage: butyl xanthate 250g / t, 2 # Oil 90g / t, butyl xanthate first prepared into 1wt% aqueous solution, 2 # The oil is added directly to the stock solution.

[0054] The mixed concentrate of sulfide ore containing Sn0.20%, Pb2.75%, Sb2.51%, and Zn16.37% was obtained by flotation, and the recoveries of tin, lead, antimony, and zinc were respectively Sn9.61%, Pb60.17 %,...

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Abstract

The invention relates to a method for desulphurizing cassiterite polymetallic sulphide ore tailing by flotation step by step. In the method, sulphide ore is removed step by step by using the flotability difference of sulphide ore. The method comprises the following steps: firstly, performing flotation on the sulphide ore with high flotability; secondly, upgrading the flotation tailing into a cassiterite sulphide ore mixed rough concentrate by using a table; and adding depressor sodium silicate, activator sodium sulfide and collecting agent yellow catching agent into the cassiterite sulphide ore mixed rough concentrate for strengthening the flotation. By using the method, the sulphide ore in the cassiterite can be removed effectively, beneficiation reagent cost is reduced and beneficiationeconomic benefit is improved.

Description

1. Technical field [0001] The invention relates to a stepwise desulfurization flotation method for cassiterite polymetallic sulfide ore, in particular to a stepwise desulfurization flotation method for tailings containing low-grade cassiterite and sulfide ore. 2. Background technology [0002] In the tailings containing cassiterite polymetallic sulfide ore, due to the uneven mineral particle size composition, the valuable minerals mostly exist in fine and microfine particles, which are easy to interact with each other during the separation process. Coarse-grained sulfide ore leads to the loss of sulfide ore in cassiterite concentrate. If fully floating sulfide ore is used to recover cassiterite, due to the oxidation of part of the sulfide ore surface, many types of chemicals are required and the amount of chemicals is large. , such fine-grained cassiterite will inevitably form tin inclusions in the flotation process of sulfide ore, resulting in the loss of tin. In addition, ...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/018
Inventor 陈建华魏宗武周德炎穆枭陈晔
Owner GUANGXI UNIV
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