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Processing method for fine-grained disseminated rutile ore difficult to separate

A rutile ore and processing method technology, applied in chemical instruments and methods, wet separation, magnetic separation, etc., can solve the problem of increasing the magnetic difference between rutile and iron minerals, difficult to effectively separate, and reducing the separation effect and utilization of rutile. Value and other issues, to achieve the effect of reducing operating costs, reducing impact, and increasing added value

Active Publication Date: 2015-11-18
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to achieve effective separation of rutile ore with fine particles embedded in hematite or limonite through magnetic separation, flotation and gravity separation.
[0004] Magnetization roasting can convert hematite or limonite into magnetite, and increase the magnetic difference between rutile and iron minerals, but rutile is easy to form ilmenite under the heating condition of iron, which greatly reduces the magnetic properties of rutile. Sorting effect and utilization value

Method used

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  • Processing method for fine-grained disseminated rutile ore difficult to separate
  • Processing method for fine-grained disseminated rutile ore difficult to separate
  • Processing method for fine-grained disseminated rutile ore difficult to separate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] SiO in the used rutile ore of the present invention 2 Content 52.46%, Fe 2 O 3 content 24.93 %, TiO 2 content 5.60 %, Al 2 o 3 Content 11.19%, V 2 o 5 The content of MgO is 0.9%, the content of MgO is 0.59%, and the content of CaO is 0.11%. The results of rock ore identification show that the minerals contained in rutile mainly include: muscovite, quartz, rutile, hematite, pyrrhotite, pyroxene, clay ore, and rutile -0.074mm is still related to quartz, hematite Wait for Liansheng. attached by figure 2 , 3 , 4. It can be seen that most rutiles are associated with other ores such as hematite, and the embedded particle size is relatively fine.

[0021] first step:

[0022] After grinding operation I, the overflow fineness of the grading equipment is -0.074mm, accounting for 65%. The overflow of the grading equipment is fed into the shaking table, and the ore in the shaking table is used as the final tailings, the shaker concentrate and the shaker slime A...

Embodiment 2

[0032]The rutile ore used is the rutile ore in Example 1.

[0033] first step:

[0034] After grinding operation I, the overflow fineness of the grading equipment is -0.074mm, accounting for 70%. The overflow of the grading equipment is fed into the shaking table, and the ore in the shaking table is used as the final tailings, the shaker concentrate and the shaker slime After the three-stage dehydration operation of concentration, filtration and drying, the dehydrated product is subjected to fluidized bed tubular roasting, and the roasted product is subjected to forced stirring and water quenching.

[0035] After the three-stage dehydration operation, the water content of the product is 0, and water gas is fed into the fluidized bed tubular roasting. The hydrogen content in the water gas is 40%, and the hydrogen content in the water gas is 40%. 3 / h, the calcination temperature is 680°C, and the calcination time is 8min.

[0036] Step two:

[0037] Classified grinding opera...

Embodiment 3

[0044] The rutile ore used is the rutile ore in Example 1.

[0045] first step:

[0046] After grinding operation I, the overflow fineness of the grading equipment is -0.074mm, accounting for 68%. The overflow of the grading equipment is fed into the shaking table, and the ore in the shaking table is used as the final tailings, the shaker concentrate and the shaker slime After the three-stage dehydration operation of concentration, filtration and drying, the dehydrated product is subjected to fluidized bed tubular roasting, and the roasted product is subjected to forced stirring and water quenching.

[0047] After the three-stage dehydration operation, the water content of the product is 1%. Water gas is fed into the fluidized bed tubular roasting. The hydrogen content in the water gas is 35%, and the hydrogen content in the water gas is 35%. 3 / h, the calcination temperature is 600°C, and the calcination time is 9min.

[0048] Step two:

[0049] Classified grinding operati...

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Abstract

The invention relates to a processing method for fine-grained disseminated rutile ore difficult to separate, and belongs to the technical field of mineral processing. The method is characterized in that under the operating conditions of primary grinding, a shaking table is adopted for primary separation so as to remove coarse-grained disseminated gangue, so that subsequent operating cost is reduced. Fluidized bed tube type calcination is adopted for reducing hematite into magnetite, so that nature difference between the hematite and the rutile is enhanced, separation between the hematite and the rutile is promoted, and influences on the rutile recovery effect from iron are reduced. The magnetite is recovered after calcination, so that the additional value of rutile ore utilization and processing is increased; ideal separation indexes of the fine-grained rutile obtained by monomer separation are achieved through level flow separation devices, namely, suspension vibration cone separators.

Description

technical field [0001] The invention relates to a method for processing and utilizing refractory rutile ore, belonging to the technical field of mineral processing. Background technique [0002] Rutile has excellent properties such as high temperature resistance, corrosion resistance, high strength, and small specific gravity. It is widely used in chemistry, metallurgy, aviation, navigation, weapons, electric power, petroleum, seawater desalination, automobiles, computers, medicine, environmental protection, and light industry. industry. Rutile itself is one of the necessary raw materials for high-grade welding electrodes, and it is also the best raw material for producing rutile titanium dioxide. [0003] With the advancement of science and technology, the emergence of new equipment, new processes, and new agents, breakthroughs have been made in the processing and utilization of rutile. The typical primary rutile processing and utilization method is first re-selection and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03C1/30C22B1/10
Inventor 白丽梅李绍英赵凯张大勇马玉新邓玉芬王学涛李萌
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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