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Method for processing high-iron low-tin ore

A technology for high iron and low tin ore and iron ore, which is applied in the field of processing high iron and low tin ores, can solve the problems that minerals cannot be effectively developed and utilized, cannot be separated, smelted and separated, and is difficult to develop and utilize, and achieves a simple and feasible method, scientific selection and high benefit. Effect

Active Publication Date: 2014-04-02
惠州市乐宏达电子制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]The high-iron-poor tin ore with a wide distribution and rich reserves, due to its main content of Fe2O3 It cannot be enriched by magnetic separation, and the symmetric and stable structure of cassiterite SnO2 that coexists in it cannot be separated by separation, so that this high-value mineral cannot be effectively developed and utilized. It is one of the refractory symbiotic ores in the world, especially the high-iron-poor tin ores containing more than 30wt% iron and less than 3wt% tin have become symbiotic ores that are difficult to develop and utilize.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A method for processing high-iron and low-tin ore, comprising: mixing high-iron and low-tin ore with reduced coal, pyrite, calcium chloride and carbon powder in a weight ratio of 1:0.8:0.6:0.055:0.5, using a disc ball making machine Make pellets, the diameter of the pellets is 14-24mm, put the pellets into a tunnel kiln, and bake the pellets at a temperature of 800°C for 8 hours. The volatilized tin is absorbed by the absorbent diatomaceous earth and converted into metallic tin , and finally get iron ore. The yields of iron and tin are both greater than 80%.

Embodiment 2

[0015] A method for processing high-iron and low-tin ore, comprising: mixing high-iron and low-tin ore with reduced coal, pyrite, calcium chloride and carbon powder in a weight ratio of 1:0.6:0.6:0.1:0.1, using a disc ball making machine Make pellets, the diameter of the pellets is 14-24mm, put the pellets into a tunnel kiln, and bake the pellets at a temperature of 1100°C for 5 hours. The volatilized tin is absorbed by the absorbent diatomaceous earth and converted into metallic tin , and finally get iron ore. The yields of iron and tin are both greater than 80%.

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Abstract

The invention relates to a method for processing high-iron low-tin ore. The method comprises the following steps: mixing high-iron low-tin ore with reducing coal, iron pyrite, calcium chloride and carbon dust according to the mass ratio of 1:(0.5-0.8):(0.6-0.75):(0.055-0.1):(0.5-0.1); pelletizing by using a disk marble forming machine, wherein the diameter of pellets is 14-24mm; putting the pellets into a tunnel kiln to roast; absorbing volatile tin by an absorbent and converting into metal tin; finally obtaining iron ore. The method disclosed by the invention is simple and feasible, and scientific, economical and reasonable in selection of technological parameters, and achieves low cost and high benefits. A new path is opened for treatment of the high-iron low-tin ore.

Description

technical field [0001] The invention relates to a method for processing high-iron and low-tin ores, belonging to the field of smelting high-iron and low-tin ores. Background technique [0002] High-iron-poor tin ore with wide distribution and abundant reserves, due to its main content of Fe 2 o 3 Cassiterite SnO that cannot be enriched by magnetic separation and symbiotic in it 2 The symmetrical and stable structure of the mineral cannot be separated by dressing and smelting, so that this high-value mineral cannot be effectively developed and utilized, and it has become one of the refractory paragenetic ores in the mining and metallurgy industry, especially if the iron content is >30wt%, and the tin content is <3wt%. The high-iron lean tin ore has become a symbiotic ore that is difficult to develop and utilize. How to separate and enrich the iron and tin therein is an unresolved technical problem so far. How to directly separate and develop this ore into high-value...

Claims

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Application Information

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IPC IPC(8): C22B1/212C22B1/245C22B25/02
Inventor 裴寿益
Owner 惠州市乐宏达电子制品有限公司