Efficient enrichment method for precious metal secondary resources

A technology for secondary resources and secondary resource materials, applied in the field of efficient enrichment of precious metal secondary resources

Inactive Publication Date: 2016-08-24
KUNMING METALLURGY COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Efficient enrichment method for precious metal secondary resources

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Embodiment 1

[0030] See attached figure 1 , conditions: precious metal secondary resource material 1000g, the amount of collector copper oxide concentrate added is 20% by weight of precious metal secondary resource material, the amount of reducing agent anthracite added is 3% by weight of platinum group metal secondary resource material, bonding The amount of coal tar agent added is 0.3% of the weight ratio of precious metal secondary resource materials, and the amount of slagging agent added is 30% of the weight ratio of precious metal secondary resource materials (of which lime:quartz powder:fluorite=4:5:1), Mix well, use a ball forming machine to make 5cm pellets, and dry to obtain composite pellets; after the intermediate frequency furnace melts scrap copper, add composite pellets to the intermediate frequency furnace in batches, mix and smelt for a period of time, and the melting temperature is 1300°C. The smelting time is 3 hours, the smelting slag is removed, and the copper water is...

Embodiment 2

[0032] See attached figure 1 , conditions: precious metal secondary resource material 3000g, the amount of collector copper oxide concentrate is 40% by weight of precious metal secondary resource material, the amount of reducing agent anthracite is 4% by weight of platinum group metal secondary resource material, and The amount of coal tar added is 0.4% of the weight ratio of the precious metal secondary resource material, and the amount of slagging agent added is 40% of the weight ratio of the precious metal secondary resource material (of which lime:quartz powder:fluorite=4:4:2), Mix evenly, use a pelletizing machine to make 5cm pellets, and dry to obtain composite pellets; after the intermediate frequency furnace melts scrap copper, add composite pellets to the intermediate frequency furnace in batches, mix and smelt for a period of time, and the melting temperature is 1400°C. The smelting time is 2 hours, the smelting slag is removed, and the copper water is poured into th...

Embodiment 3

[0034] See attached figure 1 , conditions: precious metal secondary resource material 5000g, the amount of collector high-purity copper oxide product is 15% by weight of precious metal secondary resource material, the amount of reducing agent anthracite is 4% by weight of platinum group metal secondary resource material, sticky The amount of coal tar added as a binder is 0.4% of the weight ratio of the precious metal secondary resource material, and the amount of slagging agent added is 30% of the weight ratio of the precious metal secondary resource material (of which lime:quartz powder:fluorite=4:5:1) , mix evenly, use a ball forming machine to make 5cm pellets, dry to obtain composite pellets; after the intermediate frequency furnace melts scrap copper, add composite pellets to the intermediate frequency furnace in batches, mix and smelt for a period of time, and the melting temperature is 1450°C , the smelting time is 4 hours, the smelting slag is removed, and the copper w...

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Abstract

The invention discloses an efficient enrichment method for precious metal secondary resources. The method comprises the steps that precious metal secondary resource materials, a copper collecting agent, a reducing agent, a slag forming constituent, a binding agent and water are subjected to full wet-grinding in a ball mill, and are mixed evenly and manufactured into pellets through a ball forming machine, and the pellets are dried to obtain composite pellets; after waste copper is molten in an intermediate-frequency furnace, the composite pellets are added into the intermediate-frequency furnace in batches and are subjected to mixing smelting for a period of time, smelting slag is fished out, and molten copper is poured into a casting mold to form a copper anode plate; cathode copper is obtained through an electrolysis method, precious metals enter anode mud, and electrolytic residual anodes return to conduct smelting and pouring on the anode plate and conduct electrolysis again; the anode mud is subjected to pressure acid leaching, filtering and washing to obtain precious metal concentrate, and accordingly precious metal enrichment is realized. By means of the method, the process is simple, the raw materials are high in adaptability, high efficiency and environmental friendliness are achieved, the enrichment ratio is high, cost is low, and industrialization is facilitated.

Description

technical field [0001] The invention belongs to the field of metallurgy of rare and precious metals, and relates to a method for efficiently enriching secondary resources of precious metals. Background technique [0002] There are many types of secondary resources of precious metals, and the secondary resources of precious metals include various precious metal dust, platinum group metal catalysts, silver catalysts, residues after wet extraction of platinum group metals, residues after wet extraction of silver catalysts, glass fiber bushings , electronic waste, etc., the traditional wet method can extract precious metals, but consumes a lot of acid and reagents, and produces a large amount of waste liquid, which is costly. If the fire method is used for enrichment, it can save a lot of acid and reagents and reduce acid consumption. , to reduce environmental pollution. At present, the enrichment methods of precious metal secondary resources are as follows: [0003] Yan Li an...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B11/00
CPCY02P10/20
Inventor 范兴祥雷霆黄劲峰
Owner KUNMING METALLURGY COLLEGE
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