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Comprehensive recovery process of intense-weathering poor vanadium titano-magnetite

A technology of vanadium-titanium magnetite and strong wind, which is applied in the direction of chemical instruments and methods, solid separation, wet separation, etc., can solve the problem of large reserves of vanadium-titanium magnetite, which cannot be effectively recycled and the collection of titanium concentrate It can improve the foam settling speed and flotation selectivity, improve the flotation index, and shorten the flotation time.

Inactive Publication Date: 2013-06-19
SHANDONG QIANSHUN MINING & METALLURGY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, most of the existing vanadium-depleted titanium magnetite is strongly weathered due to environmental factors. Strongly weathered vanadium-depleted titanium magnetite reserves are large, the degree of weathering is high, the degree of mudification is high, and the separation is difficult. When processing strong weathered vanadium-poor titanium magnetite with equipment technology, there are problems of high tailing grade and low yield of titanium concentrate, which cannot be effectively recycled, resulting in waste of resources. beneficiation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Embodiment 1, the concrete steps of a kind of comprehensive recovery process of strong weathering vanadium-poor titano-magnetite are as follows:

[0074] ①Pre-screening-crushing: 1t of strong weathered vanadium-poor titanium magnetite is used as raw material for pre-screening. The sieve hole size is 12mm. The product on the sieve is crushed by the crusher and returned to the sieve. The product under the sieve is the product with a qualified particle size;

[0075] ②Dry separation: put the qualified product in the magnetic separator for dry separation, the magnetic field strength is 450mT, and obtain 972kg of dry separation concentrate and 28kg of dry separation tailings, and discard the dry separation tailings. Among them, the pole distance of the magnetic separator The ratio of the pole width to the pole gap width is 2.7:1, and the height of the magnetic system is 27mm;

[0076] ③One-stage grinding: put 972kg of dry-selected concentrate into a ball mill, add water to c...

Embodiment 2

[0091] Embodiment 2, the concrete steps of a kind of comprehensive recovery process of strong weathering vanadium-poor titano-magnetite are as follows:

[0092] ① Pre-screening-crushing: 2t of strong weathered vanadium-poor titanium magnetite is used as raw material for pre-screening. The sieve hole size is 12mm. The product on the sieve is crushed by the crusher and returned to the sieve. The product under the sieve is the product with a qualified particle size;

[0093] ②Dry separation: put the qualified product in the magnetic separator for dry separation, the magnetic field strength is 455mT, get 1800kg of dry separation concentrate and 200kg of dry separation tailings, and discard the dry separation tailings. Among them, the pole distance of the magnetic separator is 225mm, the ratio of pole width to pole gap width is 2.8:1, and the height of the magnetic system is 29mm;

[0094] ③ One-stage grinding: Put 1800kg of dry-selected concentrate into a ball mill, add water to c...

Embodiment 3

[0109] Embodiment 3, the specific steps of a comprehensive recovery process of strong weathering vanadium-poor titano-magnetite are as follows:

[0110] ①Pre-screening-crushing: 3 tons of strong weathered vanadium-poor titanium magnetite is used as raw material for pre-screening. The sieve size is 12mm. The product on the sieve is crushed by the crusher and returned to the sieve. The product under the sieve is the product with a qualified particle size;

[0111] ②Dry separation: put the qualified product in the magnetic separator for dry separation, the magnetic field strength is 500mT, and obtain 2700kg of dry separation concentrate and 300kg of dry separation tailings, and the dry separation tailings are discarded. Among them, the pole distance of the magnetic separator 230mm, the ratio of the pole width to the pole gap width is 3:1, and the height of the magnetic system is 30mm;

[0112] ③One-stage grinding: Put 2700kg of dry-selected concentrate into a ball mill, add water...

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Abstract

The invention provides a comprehensive recovery process of intense-weathering poor vanadium titano-magnetite. The comprehensive recovery process of the intense-weathering poor vanadium titano-magnetite comprises the steps of prescreening, crushing, dry separation, primary grinding, primary magnetic separation, secondary grinding, secondary magnetic separation, strong magnetic separation, floating separation and syrup mixing, and titanium floating separation. The process of titanium floating separation comprises the steps of rough separation, scavenging for two times, and fine separation for four times. According to the comprehensive recovery process of the intense-weathering poor vanadium titano-magnetite, the problems that a throwing tail is high in grade and recovery rate of titanium concentrate is low when an existing process and an existing device are used for processing the intense-weathering poor vanadium titano-magnetite are solved. The index of finished products based on the comprehensive recovery process is that the grade of iron ore concentrate is 64% and yield of the iron ore concentrate is 37%, the grade of the titanium concentrate is 42% and the yield of the titanium concentrate is 41%, and the grade of fine-grain gangue iron is lower than 7% and the grade of titanium is lower than 1%.

Description

technical field [0001] The invention belongs to the field of ore screening, and in particular relates to a comprehensive recovery process of strongly weathered vanadium-depleted titano-magnetite. Background technique [0002] With the continuous expansion of the scale of my country's iron and steel industry, the gap between the supply and demand of iron ore has increased and the dependence on imports has become too high, resulting in a sharp increase in the production cost of the domestic iron and steel industry, which has further caused enormous pressure on the production cost of many related industries. [0003] my country is rich in iron ore resources, but 97% of the iron ore reserves are lean iron ore. Most foreign beneficiation technologies are aimed at high-grade ore, which is not applicable to domestic iron ore resources. Vanadium-depleted titanium magnetite deposits are widely distributed. Iron ore contains vanadium, titanium, chromium, bromine and other components, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03D1/00
Inventor 冯婕韩京增李祎苑光国王明银王伟
Owner SHANDONG QIANSHUN MINING & METALLURGY SCI
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