Normal-temperature short-process collecting agent for hematite reverse flotation

A short process, hematite technology, applied in flotation, solid separation and other directions, can solve the problems of high bromination price, complex process and high consumption, and achieve the effect of shortening the process flow, simple and convenient production, and eliminating micelles

Inactive Publication Date: 2016-02-03
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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,

Method used

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  • Normal-temperature short-process collecting agent for hematite reverse flotation
  • Normal-temperature short-process collecting agent for hematite reverse flotation
  • Normal-temperature short-process collecting agent for hematite reverse flotation

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The chemical composition of the normal-temperature short-flow collector selected for hematite reverse flotation is: sodium lignosulfonate 5.0%; acidified oil 90%; polyoxyethylene polyoxypropylene block polyether 5%; The structural formula of polyoxyethylene polyoxypropylene block polyether is:

[0029]

[0030] where a=15, b=8, c=12;

[0031] The acid value of the acidified oil is 150KOHmg / g, the saponification value is 200KOHmg / g; the iodine value is 120I 2 g / 100g;

[0032] Use process such as figure 1 Shown:

[0033] The mixed magnetic concentrate taken from a flotation plant in Anshan with an iron grade of 47.91% is used as feed ore, and water is added to make ore slurry. The temperature is controlled at 22°C. The amount of regulator sodium hydroxide is given per ton during reverse flotation roughing. Add 700g of ore, the dosage of inhibitor starch is 700g per ton of ore, the dosage of activator calcium oxide is 560g per ton of ore, and the amount of normal t...

Embodiment 2

[0037] The chemical composition of the normal temperature short-flow collector used for hematite reverse flotation is: acidified oil 80%; polyoxyethylene polyoxypropylene block polyether 20%; polyoxyethylene polyoxypropylene block polyether In the structural formula, a=17, b=12, c=8;

[0038] The acid value of the acidified oil is 110KOHmg / g, the saponification value is 160KOHmg / g; the iodine value is 90I 2 g / 100g;

[0039] Method is with embodiment 1, and difference is:

[0040] (1) Add water to the mixed magnetic concentrate with a grade of 47.91 to make pulp, control the temperature of the pulp at 24°C, add 750g of sodium hydroxide per ton of ore, add 800g of starch per ton of ore, and add calcium oxide The dosage is 570g per ton of feed ore, and the amount of short-process collector at room temperature is selected for hematite reverse flotation. The dosage is 400g per ton of feed ore, and the roughing and reverse flotation time is 3.5min;

[0041] (2) The beneficiation ...

Embodiment 3

[0044]The chemical composition of the normal temperature short-flow collector used for hematite reverse flotation is: sodium lignosulfonate 18%; acidified oil 75%; polyoxyethylene polyoxypropylene block polyether 7%; In the structural formula of ethylene polyoxypropylene block polyether, a=18, b=10, c=11;

[0045] The acid value of the acidified oil is 130KOHmg / g, the saponification value is 180KOHmg / g; the iodine value is 100I 2 g / 100g;

[0046] Method is with embodiment 1, and difference is:

[0047] (1) Control the temperature of the ore pulp at 25°C, add 750g of sodium hydroxide per ton of ore, 750g of starch per ton of ore, and 565g of calcium oxide per ton of ore, hematite For reverse flotation, the amount of short-process collector at room temperature is 405g per ton of ore feed, and reverse flotation roughing is carried out, and the time is 4 minutes;

[0048] (2) Under the condition of 25°C, the dosage of regulator sodium hydroxide is 100g per ton of ore, and the a...

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Abstract

A normal-temperature short-process collecting agent for hematite reverse flotation comprises, by mass, 0-60% of sodium lignin sulfonate, 35%-90% of acid oil and 5%-20% of polyoxyethylene-polyoxypropylene block polyether. The structural formula of the polyoxyethylene-polyoxypropylene block polyether is shown in the specification, wherein a ranges from 15 to 19, b ranges from 8 to 12, and c ranges from 8 to 12. Through the collecting agent under the condition of the normal temperature ranging from 22 DEG C to 25 DEG C, the concentrate grade of feed mixed magnetic concentrate with the grade being 47.9% can be made to reach 67%-69% through one time of roughing, one time of concentration and one time of scavenging, and the concentrate iron yield reaches 88%-91.5%; the concentrate grade is high, the concentrate recovery rate is high, and the purposes of simplifying the process, increasing the yield and reducing the cost are realized.

Description

technical field [0001] The invention belongs to the technical field of ore dressing, and in particular relates to a normal-temperature short-flow collector for reverse flotation of 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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IPC IPC(8): B03D1/018B03D101/02B03D103/02
Inventor 白晓鸣姜效军徐晋戴若丁崔玲刘雁翎高振学张晓宇
Owner ANSTEEL GRP MINING CO LTD
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