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A collector for recovering copper, lead and zinc minerals from iron beneficiation tailings

A collector and copper recovery technology, applied in flotation, solid separation, etc., can solve the problems of non-ferrous metal mineral floatability change, non-ferrous metal mineral floatability deterioration, low non-ferrous metal recovery rate, etc., to improve Flotation environment, improve flotation, and the effect of efficient and fast flotation

Active Publication Date: 2022-05-03
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many iron ores contain a small amount of non-ferrous metals such as copper, lead and zinc, which cannot meet the recycling standard by separate separation. However, after iron selection, the non-ferrous metal minerals in this type of ore form a secondary enrichment in the iron-selection tailings, and some of them It has reached the comprehensive recovery standard, but due to the complex nature of the iron ore tailings, the recovery rate of non-ferrous metals is generally not high when conventional collectors are used, and even qualified concentrate products cannot be produced. The main problems are as follows:
[0003] (1) The composition of iron dressing tailings is relatively complex, primary sulfides, secondary sulfides and oxides coexist. During the iron separation process, through ore grinding, magnetic field action and addition of mineral processing agents, the buoyancy of these non-ferrous metal minerals has occurred. Certain changes;
[0004] (2) In iron dressing tailings, due to the muddying of some minerals caused by the early grinding, the buoyancy of non-ferrous metal minerals in the tailings has deteriorated, which is similar to that of some easy-to-float gangues, making separation difficult

Method used

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  • A collector for recovering copper, lead and zinc minerals from iron beneficiation tailings
  • A collector for recovering copper, lead and zinc minerals from iron beneficiation tailings
  • A collector for recovering copper, lead and zinc minerals from iron beneficiation tailings

Examples

Experimental program
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Effect test

Embodiment 1

[0013] The tailings of a certain iron beneficiation contain 0.35% copper and 4.17% sulfur. Ester-215 is used to comprehensively recover copper.

[0014] Step 1: Add 20 parts of acrylonitrile diethyl dithiocarbamate, 20 parts of propionitrile n-butyl xanthate, 10 parts of dibutyl ammonium dithiophosphate, and 20 parts of pine oil into a container at room temperature Press and stir for 30 minutes to make ester-215;

[0015] Step 2: Adjust the tailings to a pH value of 12, add the ester-215 prepared in step 1 and stir for two minutes to float copper, and after twice beneficiation, copper concentrate can be obtained. The technical indicators are shown in Table 1.

Embodiment 2

[0025] The tailings of a certain iron beneficiation contain 0.42% copper and 1.05% sulfur. Ester-215 is used to comprehensively recover copper.

[0026] Step 1: Add 35 parts of acrylonitrile diethyl dithiocarbamate, 35 parts of propionitrile n-butyl xanthate, 15 parts of dibutyl ammonium dithiophosphate, and 15 parts of pinitol oil into the container at room temperature Ester-215 can be prepared by stirring at normal pressure for 40 minutes;

[0027] Step 2: Adjust the tailings to a pH value of 8, add the ester-215 produced in step 1 and stir for two minutes to float copper, and after twice beneficiation, copper concentrate can be obtained. The technical indicators are shown in Table 2.

Embodiment 3

[0035] The tailings of an iron beneficiation contain 0.32% copper, 0.92% zinc and 1.74% sulfur, and the copper and zinc are comprehensively recovered by ester-215.

[0036] Step 1: Add 40 parts of acrylonitrile diethyl dithiocarbamate, 40 parts of propionitrile n-butyl xanthate, 25 parts of dibutyl ammonium dithiophosphate, and 20 parts of pinitol oil into the container at room temperature Ester-215 can be prepared by stirring at normal pressure for 60 minutes;

[0037] Step 2: Adjust the tailings to a pH value of 13, add the ester-215 prepared in step 1 and stir for two minutes to float copper and zinc, and after separation after separation, copper concentrate and zinc concentrate can be obtained. See Table 3 for technical indicators.

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Abstract

The invention belongs to the technical field of mineral flotation, and in particular relates to a collector for comprehensively recovering copper, lead and zinc minerals from iron-selection tailings. The collector is the composition Ester-215, and Ester-215 is composed of the following raw materials: diethyl ether Acrylonitrile dithiocarbamate, propionitrile n-butylxanthate, dibutyl ammonium dithiophosphate and terpineol oil. Compared with conventional collectors, the ester-215 of the present invention has stronger collecting ability and good selectivity, especially for secondary sulfides and fine-grained copper-lead-zinc minerals with large mud content. The foaming property can effectively improve the flotation environment of copper, lead and zinc minerals in iron ore tailings, improve its flotability, and realize high-efficiency and fast flotation. The collector can be used in the pH range of 7-13, and the effect is good. The ability to collect pyrite is weak, which is beneficial to improve the grade of concentrate.

Description

technical field [0001] The invention belongs to the technical field of mineral flotation, and in particular relates to a collector for comprehensively recovering copper, lead and zinc minerals from iron beneficiation tailings. Background technique [0002] Copper, lead and zinc and other non-ferrous metal resources in nature are increasingly scarce with the increase of mining efforts. How to comprehensively recover such metals from secondary resources such as tailings and tailings has become the general trend. Many iron ores contain a small amount of non-ferrous metals such as copper, lead and zinc, which cannot meet the recovery standard by separate separation. However, after iron separation, the non-ferrous metal minerals in this type of ore form secondary enrichment in the iron separation tailings, and some of them The comprehensive recovery standard has been reached, but due to the complex nature of the iron ore tailings and the use of conventional collectors, the recove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/014B03D101/02B03D103/02
CPCB03D1/014B03D2201/02B03D2203/02
Inventor 柏亚林彭贵熊王李鹏胡保栓郭海宁包玺琳巩明辉王志丰刘坤任琳珠杨俊龙李健民
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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