Mineral dressing collector for poor hematite reverse flotation

A collector and hematite technology, applied in flotation, solid separation, etc., can solve the problems of high viscosity of flotation foam, complex dispensing system, and low collection efficiency, so as to reduce the grade and save heating energy consumption , significant economic benefits

Inactive Publication Date: 2009-06-17
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has proved that the flotation foam produced by amine cationic collectors in the reverse flotation process has high viscosity, poor s

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1

[0013] One-stage grinding of lean hematite with 28.55% of the original ore grade is carried out, and the overflow particle size reaches about 60% of -200 mesh. It is fed into the coarse and fine-divided cyclone. The cyclone (coarse-grained) adopts two-stage spiral chute for heavy separation. The final coarse-grained concentrate is controlled by the fine sieve. The grade is 66.67%, the yield is 17.17%, and the yield is 40.15%. The heavy tail is controlled by a magnetic sweep to throw away the qualified coarse-grained tailings. The grade is 9.28% and the yield is 26.33%, the yield is 8.56%, the medium ore is returned to the coarse and fine-divided cyclone after regrind. Rotary overflow (fine particle grade) adopts weak magnetic and strong magnetic separation to remove mud and tail. Its grade is 9.95%, the yield is 30.57%, and the yield is 10.66%. At the same time, the mixed magnetic fine (floating) is obtained, and its grade is 44.73%. The rate is 25.93%, and the ...

Example Embodiment

[0014] Example 2

[0015] In this example, after pre-processing the lean hematite of the same grade as in Example 1 using the same beneficiation process, 3.1ml (concentration 5wt%) of the mineral processing collector of the present invention was added, where C 10 H 21 C(OH) 2 CH 2 COOK is 20% (weight percentage), C 13 H 27 C(OH) 2 CH 2 COOK is 15% (weight percentage), C 16 H 31 C(OH) 2 CH 2 COOK is 12% (weight percentage), C 18 H 35 C(OH) 2 CH 2 COOK is 53% (weight percentage). Under the condition of 16℃, carry out reverse flotation of one coarse, one fine and three sweeps, and finally get 68.70% grade, 112.20g flotation concentrate and 14.10% grade, 87.80g weight. Flotation tailings.

Example Embodiment

[0016] Example 3

[0017] In this example, after pre-processing the lean hematite of the same grade as in Example 1 using the same beneficiation process, 2.8ml (concentration 5wt%) of the beneficiation collector of the present invention was added, where C 11 H 20 C(OH)C(OH)COOK is 20% (weight percentage), C 14 H 29 C(OH) 2 CH 2 COOK is 9% (weight percentage), C 17 H 33 C(OH) 2 CH 2 COOK is 20% (weight percentage), C 19 H 37 C(OH) 2 CH 2 The COOK is 51% (weight percentage). Under the condition of 18℃, the reverse flotation of one coarse, one fine and three sweeps is carried out, and the final grade is 68.60%, weight 112.50g flotation concentrate and 14.04% grade, weight 87.50g Flotation tailings.

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Abstract

The invention provides an ore-dressing agent for use in reverse flotation of lean hematite ore. The collecting agent is a potassium salt of the hydroxy fatty acid and has a chemical molecular formula of R1-C(OH)n1-C(OH)n2-COOK, wherein n1 ranges from 1 to 2, n2 ranges from 0 to 2, and R1 is preferably saturated or unsaturated hydrocarbons having 9 to 19 carbon atoms. According to a molecular design principle, the invention introduces hydroxyl functional groups to alpha positions and beta positions of a fatty acid mixture and adopts potassium hydroxide for saponification. The collecting agent has the advantages of reducing energy consumption due to preparation and use at the normal temperature, reducing use cost due to small dosage, reducing tailings grade during reverse flotation ore dressing operation by improving the technical indexes of reverse flotation, along with obvious economic effect.

Description

technical field [0001] The invention belongs to the technical field of beneficiation agents, and in particular relates to a beneficiation collector selected for reverse flotation of lean hematite. Background technique [0002] The reverse flotation process of lean hematite ore has been widely used in my country in recent years, and has made an important contribution to the iron beneficiation and impurity reduction of iron ore in my country. The types of collectors used in reverse flotation are basically cationic amines and anionic fatty acids. Practice has proved that the flotation foam produced by amine cationic collectors in the reverse flotation process has high viscosity, poor selectivity, and low collection efficiency; The temperature is high, the energy consumption is large, and the dispensing system is complicated. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a novel ore dress...

Claims

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Application Information

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IPC IPC(8): B03D1/008B03D101/02B03D103/04
Inventor 宋仁峰吕建华陈巍周惠文王忠红陈占金李维兵高国英郭客张长奎
Owner ANSTEEL GRP MINING CO LTD
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