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Method for converting refractory complex lead-zinc oxide ore by low-temporature sul furization

A lead-zinc oxide and low-temperature vulcanization technology, applied in the field of beneficiation and metallurgy, can solve the problems of difficulty in overcoming the complexity of minerals, low metal recovery rate, large consumption of chemicals, etc., and achieves reduced flotation process flow, simple operation, and metal recovery. The effect of rate guarantee

Inactive Publication Date: 2006-10-25
YUNNAN METALLURGICAL GROUP +2
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The above methods can only selectively separate two or three minerals in complex lead-zinc oxide ores, and the common disadvantages of these methods are complex technical processes, low metal recovery rate, difficult separation of lead and zinc, and dispersion of valuable metals. The consumption of chemicals is large, and it is difficult to overcome the complexity of minerals, making it difficult to sort minerals

Method used

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  • Method for converting refractory complex lead-zinc oxide ore by low-temporature sul furization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: Conditions at a temperature of 100°C and an inert gas pressure of 0.01MPa:

[0017] Containing 1% lead, zinc-containing 8% refractory complex lead-zinc oxide ore and sulfur, the addition of sulfur is 0.5% of the refractory complex lead-zinc oxide ore amount mixed with graphite powder in terms of elemental sulfur, and then mixed with graphite powder. The device is continuously fed into the heating furnace, the temperature in the furnace is controlled at 100 ° C ± 1, argon is introduced to maintain the pressure of the inert gas in the furnace at 0.01 MPa, and the heating conversion of lead-zinc oxide is carried out, and the conversion time is 10 minutes.

[0018] The zinc conversion rate is 45%, the lead conversion rate is 58%, and the iron conversion rate is 60%.

Embodiment 2

[0019] Example 2: Conditions at a temperature of 900°C and an inert gas pressure of 0.1MPa:

[0020] Containing 15% of lead, containing 20% ​​of zinc refractory complex lead-zinc oxide and iron sulfide, the addition of iron sulfide is 5.5% of the refractory complex lead-zinc oxide ore amount mixed with coke powder in terms of elemental sulfur, Use a feeder to continuously feed into the heating furnace, control the temperature in the furnace at 900 ° C ± 1, pass in argon, maintain the pressure of the inert gas in the furnace at 0.1 MPa, and carry out the thermal conversion of lead-zinc oxide. The conversion time is 180 minutes.

[0021] The zinc conversion rate is 96%, the lead conversion rate is 97.5%, and the iron conversion rate is 98.5%.

Embodiment 3

[0022] Example three: at a temperature of 650°C and an inert gas pressure of 0.08MPa:

[0023] Containing 15% lead, zinc-containing 10% refractory complex lead-zinc oxide ore and sodium sulfide, the addition of sodium sulfide is 3.5% of the refractory complex lead-zinc oxide ore amount in terms of elemental sulfur by weight and after mixing with coke, use The feeder is continuously fed into the heating furnace, the temperature in the furnace is controlled at 650 ° C ± 1, nitrogen gas is introduced to maintain the pressure of the inert gas in the furnace at 0.08 MPa, and the heating conversion of lead-zinc oxide is carried out, and the conversion time is 100 minutes.

[0024] The zinc conversion rate is 90.5%, the lead conversion rate is 93.6%, and the iron conversion rate is 95%.

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Abstract

The invention relates to the method of the low temperature sulfuration translating the bad choosing complex oxidation lead zinc mine. The difficult choosing complex lead and zinc mine oxide, the sulfur, the fool's gold and the natrium sulfuration are served for the reagent sulfuration, the joining quantity of the sulfureted reagent is 0.5-10 percentage of the quantity of the difficult choosing complex lead and zinc mine oxide calculating by the element sulfur, the char repeat cover reagent such as the coke, the coke powder, the coal powder and the lead powder are mixing, the inert gases such as the argon gas and the azote gas are severed as the gas medium to add in the heating stove, the temperature keeps 100-900, the inert gas press keeps 0.01-0.1MPa, the lead and the zinc mine oxide is transferred to the sulfureted reagent after 10-180 minutes. On the said circumstance, the added sulfureted reagent can choose the lead, the zinc or the tantalum with the value to act, the single sulfureted reagent is gained, the other gangue factors can hold in the mine slurry without the change. The invention has many merits such as the easy process, the high percentage of reclaim of the metal, separating the lead and the zinc easy, the low wastage of the medicament, the realization of treating the metal with the value in advance.

Description

technical field [0001] The invention belongs to the field of beneficiation and smelting, and more specifically relates to a pretreatment method for the separation of complex lead-zinc oxide minerals. Background technique [0002] The lead-zinc oxide deposit belongs to the oxidized part of the sulfide deposit, which is a deposit formed by supergenesis, that is, the part of the metal sulfide deposit close to the surface, which has been subjected to the effects of oxygen, carbon dioxide, water, and biological organic matter for a long time, resulting in supergene zoning ore deposit. Due to the wide variety of minerals, various oxide ores are present, mixed with each other and associated with each other, and the embedded particle size is relatively fine, the muddy state is serious, and iron minerals are often added, so the separation of such minerals And enrichment is quite difficult and complex. [0003] Zinc minerals in lead-zinc oxide mainly include smithsonite (ZnCO 3 ), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/00C01G9/08C01G21/21
Inventor 王吉坤魏昶董英周廷熙李松春杨道勤赵道全樊刚李勇
Owner YUNNAN METALLURGICAL GROUP
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