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Method and system for recovering low-grade fine-fraction ilmenite

A fine-grained, ilmenite technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of complex process flow, difficult operation, and large number of equipment, and achieve simple and reliable process flow, Widely promote the effect of application value and simple process

Pending Publication Date: 2018-09-14
PANGANG GRP MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the main disadvantages of the flotation process are that the process is complicated, the preparation of various flotation agents is demanding, the operation is difficult, the production cost is high, and it has certain pollution to the environment, especially when the flotation agents are used in flotation and drying. The peculiar smell produced in the dry operation has a great impact on the physical and mental health of the surrounding residents, and it is difficult to completely control it
[0003] In the "gravity separation + dry strong magnetic separation" process, the recovery effect of the spiral chute of the gravity separation equipment on fine-grained ilmenite is poor, which is not conducive to the improvement of the recovery rate; the dry strong magnetic separator needs to sort raw materials For drying, the energy consumption is high, and a large amount of dust is generated during the production process, which is easy to cause pollution to the surrounding environment, and has high requirements for the construction of environmental protection equipment. ~5 tons / hour), the construction of a production line with the same production scale requires a large number of equipment and a large floor area

Method used

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  • Method and system for recovering low-grade fine-fraction ilmenite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] TiO containing after iron selection 2 The tailings slurry (low-grade fine-grained ilmenite) with a grade of about 6.3% is classified with a sieve with an aperture of -0.074mm;

[0055] The product under the sieve is deironed once with a weak magnetic drum magnetic separator with a field strength of 0.2T;

[0056] The tailings after iron removal are separated by a vertical ring high gradient magnetic separator with a field strength of 0.7T;

[0057] The titanium concentrate obtained by strong magnetic separation is then selected with a centrifugal concentrator. The process parameters in the centrifugal gravity separation process are: the centripetal force of the enrichment cone is about 60G; the particle size of the ore is -0.074mm; the concentration of the ore is 10 %, the ore feeding time is 180s; the recoil water volume is 5L / min, and the TiO-containing 2 About 36% titanium concentrate;

[0058] The ilmenite concentrate is then refined using a Yunnan tin shaker, a...

Embodiment 2

[0062] TiO containing after iron selection 2 The tailings slurry (low-grade fine-grained ilmenite) with a grade of about 6.3% is classified with a sieve with an aperture of -0.074mm;

[0063] The product under the sieve is deironed once with a weak magnetic drum magnetic separator with a field strength of 0.15T;

[0064] The tailings after iron removal are separated by a vertical ring high gradient magnetic separator with a field strength of 0.65T;

[0065] The titanium concentrate obtained by strong magnetic separation is then selected by a centrifugal concentrator. The process parameters of the centrifugal gravity separation are: the centripetal force of the enrichment cone is about 65G; the particle size of the ore is -0.074mm; the concentration of the ore is 10.5% , the feeding time is 185s; the recoil water volume is 6L / min, and the TiO-containing 2 About 35% titanium concentrate;

[0066] The titanium concentrate is then refined using a Yunnan tin shaker, and the pro...

Embodiment 3

[0070] TiO containing after iron selection 2 The tailings slurry (low-grade fine-grained ilmenite) with a grade of about 6.3% is classified with a sieve with an aperture of -0.074mm;

[0071] The product under the sieve is deironed once with a weak magnetic drum magnetic separator with a field strength of 0.25T;

[0072] The tailings after iron removal are separated by a vertical ring high gradient magnetic separator with a field strength of 0.75T;

[0073] The titanium concentrate obtained by strong magnetic separation is then selected by a centrifugal concentrator. The process parameters of the centrifugal gravity separation are: the centripetal force of the enrichment cone is about 60G; the particle size of the ore is -0.074mm; the concentration of the ore is 11% , the feeding time is 175s; the recoil water volume is 4L / min, and the TiO-containing 2 About 37% titanium concentrate;

[0074] The ilmenite concentrate is then refined using a Yunnan tin shaker, and the proce...

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Abstract

The invention provides a system for recovering low-grade fine-fraction ilmenite. The system comprises a low-intensity magnetic separator, a high-intensity magnetic separator with an inlet connected with a tailing outlet of the low-intensity magnetic separator, a centrifugal separator with an inlet connected with an ilmenite concentrate outlet of the high-intensity magnetic separator as well as a shaking table with an inlet connected with an ilmenite concentrate outlet of the centrifugal separator. The system for recovering the low-grade fine-fraction ilmenite performs high-intensity magnetic separation, centrifugal gravity separation and tabling sequentially, particularly, the low-grade fine-fraction ilmenite is recovered by the centrifugal separator and the shaking table, the technological process of recovery is simplified, production cost is low, metal recovery rate is higher, and environmental pollution is low. The invention further provides a method for recovering the low-grade fine-fraction ilmenite.

Description

technical field [0001] The invention relates to the technical field of recovering ilmenite, in particular to a method and system for recovering low-grade fine-grained ilmenite. Background technique [0002] In the prior art, the recovery of ilmenite usually adopts a technological process such as "strong magnetic (high gradient) + flotation" or "gravity separation (multiple gravity) + dry strong magnetic separation". In the "strong magnetic + flotation" process, flotation plays a key role in the stability of the process or in improving the grade and recovery rate of titanium fine ore, especially for the recovery of fine-grained ilmenite (note: -0.045mm grain Mineral particles with a grade content of more than 80% are called fine grades). However, the main disadvantages of the flotation process are that the process is complicated, the preparation of various flotation agents is demanding, the operation is difficult, the production cost is high, and it has certain pollution to ...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B9/00
CPCB03B7/00B03B9/00
Inventor 郭明彬丁君
Owner PANGANG GRP MINING
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