Method for enriching precious metal by using yellow phosphorus electric furnace

A technology of precious metals and electric furnaces, applied in the direction of non-metallic elements, chemical instruments and methods, phosphorus compounds, etc., to achieve high enrichment rate, ability to increase market risk, and full utilization of resources

Inactive Publication Date: 2008-03-26
GUIZHOU WENGFU YELLOW PHOSPHORUS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Yellow phosphorus electric furnaces at home and abroad are all used for yellow phosphorus production. So far, no one has used yellow phosphorus equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] Embodiment: the raw materials in the following table are measured in proportion, so that the precious metal raw material accounts for 5% of the total material ratio, the silicon-calcium ratio is 0.8, and the coke consumption coefficient is 103%, fully mixed, and sent to the yellow phosphorus raw material warehouse, Under the action of gravity, it enters the yellow phosphorus furnace from the top.

[0031]

raw material name

one

bit

P 2 o 5

CaO

SiO 2

CO 2

Fe 2 o 3

MgO

Grain

degrees, mm

moisture

fixed

the carbon

precious

Metal

Phosphate rock

％

27.5

43.0

15

3.2

1.5

2.0

5～50

2.0

-

Silica

％

92

5～50

2.0

-

white coal

％

5～40

3.0

76

containing precious metals

raw material

％

...

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PUM

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Abstract

The process of enriching noble metal in an electric yellow phosphorus furnace includes the following steps: roasting the materials including phosphorus ore 45-65 wt%, silica 10-20 wt%, white coal or coke 15-30 wt% and noble metal material 2-30 wt% in an electric furnace to obtain ferrophosphorus rich in noble metal; crushing ferrophosphorus, adding sodium carbonate or sodium hydroxide, roasting at high temperature to obtain mixture of sodium phosphate and metal oxide; leaching the mixture with water, centrifugally separating, filtering and other steps to obtain sodium phosphate product and metal oxide; dissolving the metal oxide in inorganic acid and extracting to separate different kinds of noble metals. The present invention can obtain yellow phosphorus and noble metal concentrate simultaneously.

Description

technical field [0001] The invention relates to a yellow phosphorus electric furnace, and also relates to a method for enriching metals by treating ores with an electrothermal method, in particular to a method for enriching precious metals by utilizing a yellow phosphorus electric furnace. Background technique [0002] Precious metals are valuable because they are rare. Usually the grade of precious metals in the ore is very low, in order to produce precious metals, people have developed some methods of enriching precious metals, such as Chinese patent application No. Electric Furnace Melting Production Method", No. 03128398.5 "Precious Metal Micro-fine Tailings Dry Classified Enrichment Method". But so far, no one has proposed related technologies and documents such as a method for enriching precious metals using a yellow phosphorus electric furnace. [0003] Yellow phosphorus electric furnaces at home and abroad are all used for yellow phosphorus production. So far, no o...

Claims

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Application Information

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IPC IPC(8): C22B11/00C22B1/14C22B5/10C22B1/02C01B25/30C22B3/06C22B3/26
CPCY02P10/20
Inventor 何浩明金钢杨光明
Owner GUIZHOU WENGFU YELLOW PHOSPHORUS
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