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A kind of normal temperature short process reverse flotation method for hematite

A technology of reverse flotation and hematite, applied in flotation, solid separation, etc., can solve the problems of high bromination price, complicated process, high consumption, etc., achieve shortened process flow, simple and convenient production, and eliminate micelles Effect

Active Publication Date: 2017-06-27
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent application number: 2015100906877 discloses a normal temperature collector prepared by mass percentage: 86-96% of a-ethylenediamine carboxylic acid, 2-7% of a-bromocarboxylic acid and 2-7% of ethylenediamine , the bromination price is high, the process is complicated, and the yield is 74.43% low
It also contains one or more of ricinoleic acid, vegetable oleic acid, animal oleic acid or cottonseed oleic acid, 200g feeds 2% collector 12mL, the consumption is too high, and the traditional process of one rough, one fine and three sweeping is complicated

Method used

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  • A kind of normal temperature short process reverse flotation method for hematite
  • A kind of normal temperature short process reverse flotation method for hematite
  • A kind of normal temperature short process reverse flotation method for hematite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The chemical components of the red collector are: 5.0% sodium lignosulfonate; 90% acidified oil; 5% polyoxyethylene polyoxypropylene block polyether; the polyoxyethylene polyoxypropylene block The structural formula of polyether is:

[0030]

[0031] where a=15, b=8, c=12;

[0032] The acid value of the acidified oil is 150KOH mg / g, the saponification value is 200KOH mg / g; the iodine value is 120I 2 g / 100g;

[0033] Use process such as figure 1 Shown:

[0034] The mixed magnetic concentrate taken from a flotation plant in Anshan with an iron grade of 47.91% is used as the ore feed. The temperature of the slurry is controlled at 22°C. The dosage of the regulator sodium hydroxide is 700g per ton of feed ore during reverse flotation roughing. , the amount of inhibitor starch is 700g per ton of ore feed, the amount of activator calcium oxide is 560g per ton of ore feed, and the amount of collector is 400g per ton of ore feed; carry out reverse flotation roughing, tim...

Embodiment 2

[0038] The chemical composition of the collector is as follows: acidified oil 80%; polyoxyethylene polyoxypropylene block polyether 20%; polyoxyethylene polyoxypropylene block polyether in the structural formula a=17, b=12, c=8;

[0039] The acid value of the acidified oil is 110KOH mg / g, the saponification value is 160KOH mg / g; the iodine value is 90I 2 g / 100g;

[0040] Method is with embodiment 1, and difference is:

[0041] (1) The mixed magnetic concentrate with a grade of 47.91 is made into pulp, and the temperature of the pulp is controlled at 24°C. The amount of sodium hydroxide is 750g per ton of ore, the amount of starch is 800g per ton of ore, and the amount of calcium oxide is Add 570g per ton of ore, and add 400g of collector per ton of ore, and the roughing and reverse flotation time is 3.5min;

[0042] (2) The beneficiation control is carried out at 24°C, the dosage of the regulator sodium hydroxide is 95g per ton of ore feed, the amount of collector is 150g p...

Embodiment 3

[0045] The chemical composition of the collector is as follows: sodium lignosulfonate 18%; acidified oil 75%; polyoxyethylene polyoxypropylene block polyether 7%; polyoxyethylene polyoxypropylene block polyether in the structural formula a=18, b=10, c=11;

[0046] The acid value of the acidified oil is 130KOH mg / g, the saponification value is 180KOH mg / g; the iodine value is 100I 2 g / 100g;

[0047] Method is with embodiment 1, and difference is:

[0048] (1) Control the temperature of the pulp at 25°C, add 750g of sodium hydroxide per ton of ore feed, 750g of starch per ton of ore feed, and 565g of calcium oxide per ton of ore feed, collector The dosage is to add 405g per ton to the ore, and carry out reverse flotation roughing, and the time is 4min;

[0049] (2) Under the condition of 25°C, the dosage of regulator sodium hydroxide is 100g per ton of feed ore, the amount of collector is 160g per ton of feed ore, and the reverse flotation concentration time is 3min;

[0050] ...

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Abstract

A short process reverse flotation method for hematite at normal temperature, (1) adding water to the ore to make ore slurry; (2) performing reverse flotation roughing on the ore slurry at 22-25°C, (3) roughing concentrate at 22 Reverse flotation and concentration at ~25°C to obtain concentrates and concentrated tailings; the chemical components of the collector are: sodium lignosulfonate 0-60%; acidified oil 35-90%; poly 5-20% of oxyethylene polyoxypropylene block polyether; the structural formula of the polyoxyethylene polyoxypropylene block polyether is: The technical process of the invention is shortened, the grade of the concentrate is high, and the recovery rate of the concentrate is high, and the purposes of process simplification, yield improvement and cost reduction are realized.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a normal-temperature short-flow reverse flotation method for hematite. Background technique [0002] In the beneficiation field of oxidized ore such as hematite, reducing the flotation temperature, increasing the separation efficiency, shortening the process and simplifying the operation are the key issues of the iron ore flotation technology, which is of great significance to improve the comprehensive benefits of the beneficiation enterprises. [0003] In order to improve the beneficiation efficiency of hematite, it is necessary to develop new flotation reagents. At present, research in this field is very active, and related inventions have been reported one after another. For example, Chinese patent application number: 2014102560544 discloses a hematite low-temperature flotation agent and its preparation method. The foaming agent is made through saponifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/012B03D101/02
Inventor 白晓鸣姜效军高振学刘雁翎袁哲张晓宇修德江
Owner ANSTEEL GRP MINING CO LTD
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