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Nano-catalytic smelting method for platinum group metals

A technology of nano-catalysis and smelting method, applied in the field of metallurgy, can solve the problems of low resource utilization rate, low platinum group content, low platinum group metal production, etc., and achieve the effect of shortening recovery time, shortening operation period and expanding scale

Inactive Publication Date: 2018-12-28
徐魁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

China's gold production ranks first in the world, but the ore contains little platinum group content, mainly poor ore, which has no economic value, domestic production of platinum group metals is small, and resource utilization rate is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The nano-catalytic smelting method of platinum group metals includes the following steps: (1) beneficiation (2) re-selection: enriching the raw ore fine powder (3) adding additives (4) mixing the enriched raw ore fine powder, reducing agent, and nano-catalyst mixture in In the reduction device, the amount of carbon is 5-20%, and the reduction temperature is 1600 ° C for 120 minutes to reduce the valuable metals in the ore. During the smelting process, nano-catalysts are added (5) Refining: crushed into particles below 2 mm (6) Wet separation and purification to obtain platinum, palladium, osmium, iridium and rhodium.

[0029] The additive in step (3) is to mix the micron powder, nano powder and main metal powder by ball milling, and use the main metal powder as a binder to press into blocks; the weight ratio of metal powder to micron powder and nano powder is 4:1 -12:1.

[0030] Micron powder and nano powder use metal oxide Al 2 o 3 Powder, ZrO 2 Powder, CaCO 3 pow...

Embodiment 2

[0032] The nano-catalytic smelting method of platinum group metals includes the following steps: (1) beneficiation (2) re-selection: enriching the raw ore fine powder (3) adding additives (4) mixing the enriched raw ore fine powder, reducing agent, and nano-catalyst mixture in In the reduction device, the amount of carbon is 5-20%, and the reduction temperature is 1800 ° C for 90 minutes to reduce the valuable metals in the ore. During the smelting process, nano-catalysts are added (5) Refining: crushed into particles below 2 mm (6) Wet separation and purification to obtain platinum, palladium, osmium, iridium and rhodium.

[0033] The additive in step (3) is to mix the micron powder, nano powder and main metal powder by ball milling, and use the main metal powder as a binder to press into blocks; the weight ratio of metal powder to micron powder and nano powder is 4:1 -12:1.

[0034] Micron powder and nano powder use metal oxide Al 2 o 3 Powder, ZrO 2 Powder, CaCO 3 powd...

Embodiment 3

[0036] The nano-catalytic smelting method of platinum group metals includes the following steps: (1) beneficiation (2) re-selection: enriching the raw ore fine powder (3) adding additives (4) mixing the enriched raw ore fine powder, reducing agent, and nano-catalyst mixture in In the reduction device, the amount of carbon is 5-20%, and the reduction temperature is 1600 ° C for 60 minutes to reduce the valuable metals in the ore. During the smelting process, nano-catalysts are added (5) Refining: crushed into particles below 2 mm (6) Wet separation and purification to obtain platinum, palladium, osmium, iridium and rhodium.

[0037] The additive in step (3) is to mix the micron powder, nano powder and main metal powder by ball milling, and use the main metal powder as a binder to press into blocks; the weight ratio of metal powder to micron powder and nano powder is 4:1 -12:1.

[0038] Micron powder and nano powder use metal oxide Al 2 o 3 Powder, ZrO 2 Powder, CaCO3 powder...

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PUM

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Abstract

The invention discloses a nano-catalytic smelting method for platinum group metals, and belongs to the technical field of metallurgy. The nano-catalytic smelting method for the platinum group metal comprises the following steps: (1) beneficiation; (2) checking: enriching fine powder of raw ore; (3) additive adding; (4) obtaining of a metal compound by smelting; (5) refining: crushing the compoundinto particles with size smaller than 2 mm; (6) wet separation and purification for obtaining platinum, palladium, osmium, iridium and rhodium. The raw iron sulfide material in precious metal ore is used fully in the method, metallurgical flow in a pyrogenic process is simplified greatly, and valuable metal copper of ore is enriched sufficiently.

Description

technical field [0001] The invention relates to a method for smelting platinum group metals, belonging to the technical field of metallurgy. Background technique [0002] Platinum, palladium, osmium, iridium, rhodium and other six elements are collectively called the platinum group, and the platinum group is one of the rarest metal elements on earth. According to the statistics of the US Geological Survey, the annual production of all platinum groups is 292 tons, of which palladium is the most produced at 207 tons, and the output of other platinum groups is even less, of which rhodium is only 25 tons. The main producing countries are the Republic of South Africa (72%), Russia (14%), Canada (5.2%), and Zambia (4%). With the development of modern science and technology, the demand for platinum group in the world is growing explosively, but platinum group metals are scarce, production is limited, and the price is expensive. They are more widely used in industry than gold. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B5/10C22B3/04C22B11/02
CPCC22B5/10C22B3/04C22B11/02C22B11/04
Inventor 徐魁
Owner 徐魁