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A smelting process for processing complex gold ore

A gold ore and complex technology, applied in the field of smelting process for processing complex gold ore, can solve the problems of increasing smelting cost, high arsenic content of gold ore materials, and many unfavorable processes of smelting products, etc., to achieve automation, high integration and adaptability strong effect

Active Publication Date: 2022-08-02
胡宪利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the gold ore can only be processed together, and the smelting products have many unfavorable processes. The gold concentrate materials are transported to the copper factory to increase the smelting cost, and it is not easy to process a large amount of low-copper gold concentrates. The arsenic content of the gold ore materials is limited and strictly controlled. Enter blister copper, slag and sulfur dioxide flue gas to ensure copper, sulfuric acid quality and slag properties
[0008] my country has proven gold reserves of more than 1,000 tons of complex polymetallic ores containing gold, arsenic, carbon, sulfur, antimony, mercury, lead, zinc, copper, bismuth, and tellurium, which have not yet been developed and utilized. The successful experience of gold mines (containing more than 7% arsenic), the domestic production process does not have a separate high-efficiency arsenic removal process, so that the proven extremely complex gold-containing "dull mines" have not been developed and utilized

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  • A smelting process for processing complex gold ore

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The main components of the original gold ore: Au 7.8g / T, Ag 56g / T, Cu 1.26%, Fe 29.12%, S 21.03%, As14.01%, C 2.48%, SiO 2 11.7%, CaO 2.6%. The particle size of crushed ore is 10-25mm. Quartz stone, limestone and granular coal are added. The material ratio is: original gold ore: quartz stone: limestone: granular coal = 100:8:5:4. Add it into the rotary converter, roast it to remove arsenic, control the reaction temperature with a combustion spray gun to 650 ° C, the oxygen concentration is 75%, the furnace is a weak reducing atmosphere, the oxygen supply is 80% of the theoretical value, the furnace body rotation speed is 5r / min, continuous The arsenic removal operation time is 1.5 hours, and the charge containing arsenic less than 0.3% is transferred to the smelting operation; during the smelting, the oxygen supply ratio of the combustion lance is adjusted, the carbonaceous combustion heat supply is strengthened, the reaction temperature is controlled at 1350 ° C, and ...

Embodiment 2

[0037] The composition of cyanide gold extraction tailings is: Au 3.05g / T, Ag 36.84g / T, Cu 0.06%, Pb 1.51%, Zn0.3%, As 0.3%, S 9.92%, C 8.6%, Fe 28.2%, SiO 2 9.6%, CaO 4.2%. The ratio of cyanidation gold extraction tailings: quartz stone: granular coal is 100:9:6.5. Add the bottom material to directly smelt and make a molten pool, open the combustion lance, adjust the oil, oxygen and coal to burn together, control the melting temperature to 1350 ° C, the furnace is a weak neutral atmosphere, the oxygen supply concentration is 99.6%, and the oxygen supply is the theoretical value. 95%, the rotating speed of the furnace body is 3r / min, and the material-forming time is 35 minutes. The bottom material is all turned into liquid and enters the continuous blowing operation. The oxygen-blowing lance is used for continuous oxygen blowing, continuous feeding, continuous slagging, and intermittent slag removal. The blowing and slagging period is a strong oxidizing atmosphere, the oxyg...

Embodiment 3

[0039] Flotation gold concentrate, the main components are Au 28g / T, Ag 315.5g / T, Fe 26%, SiO 2 6.72%, CaO1.55%, S 28.02%, when the sulfur content in the gold ore raw material is higher than 26%, the oxygen smelting is completely self-heating, and there is no need to add fuel coal. Ingredients: Gold Concentrate: Quartz Stone: Limestone = 100:13:5, after adding the bottom material, use a combustion spray gun to burn the chemical material, control the reaction temperature to 1350 ℃, melt all the bottom material in the furnace into liquid, and the furnace is neutral Atmosphere, the oxygen supply concentration is 93%, the oxygen supply amount is 95% of the theoretical value, the rotating speed of the furnace body is 3r / min, and the material-forming time is 35 minutes. Oxygen blowing, continuous feeding, continuous slagging, and intermittent slag removal. The blowing and slagging period is a strong oxidizing atmosphere, the oxygen supply concentration is 93%, the oxygen supply am...

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Abstract

A smelting process for processing complex gold ore, including batching, dearsenic, smelting, slagging, desulfurization and refining. The refined product is sent to the existing precious metal extraction process to obtain gold and silver products. If the gold ore contains copper, the refined product is The blister copper rich in gold, silver and low sulfur can obtain electrolytic copper and anode slime through the electro-copper process, and the anode slime can obtain gold products and silver products through the existing precious metal extraction process; the process of the invention can directly process various difficult-to-treat products It has the advantages of simple equipment, easy operation, short process flow, high metal recovery rate, maximum utilization of resources, and significant economic benefits.

Description

technical field [0001] The invention belongs to the technical field of gold smelting, and relates to a smelting process for processing complex gold ore. Background technique [0002] About 80% of rock gold ore in my country is selected by flotation method, and flotation method is also used to process complex polymetallic ores, such as: gold-copper, gold-lead, gold-antimony, gold-copper-lead-zinc- Sulfur ore, this method occupies a very important position in gold production. In the production practice, the stage grinding and flotation process, and the combined heavy and flotation process are the main trends in the development of flotation technology in my country at present, which improve the flotation index and concentrate grade. is about 75%. [0003] The complex and refractory gold ore contains arsenic, carbon, sulfur, antimony, lead, zinc, bismuth, copper and other metal sulfides. The arsenopyrite in the minerals exists in the form of arsenopyrite. Arsenopyrite is closel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B11/02C22B1/02C22B7/02
CPCC22B11/02C22B1/02C22B7/02Y02P10/20
Inventor 胡宪利
Owner 胡宪利