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Hematite anti-flotation collector as well as preparation method and use method thereof

A collector and reverse flotation technology, applied in flotation, solid separation and other directions, can solve the problems of complex chemical system, high energy consumption, high flotation temperature requirements, achieve good market promotion value, wide range of raw material sources, The effect of improving solubility

Active Publication Date: 2014-09-24
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cationic reverse flotation has defects such as inconvenient preparation, excessive viscosity of flotation foam, poor fluidity and selectivity, and low flotation efficiency.
[0004] At present, anion reverse flotation is mostly used in industry, and the process is relatively mature. However, anion reverse flotation has the problems of complicated reagent system, high flotation temperature requirements, high energy consumption, poor selectivity, and large reagent consumption.
Collectors traditionally used in anion flotation process have better desiliconization effect at room temperature or higher temperature (>30°C). The effect of silicon is getting worse, so that the production index is not up to standard

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0023] The preparation process of the hematite reverse flotation desiliconization collector is as follows: at room temperature, mix 10-40 parts of hydroxy fatty acid, 10-50 parts of sulfonated fatty acid and 10-30 parts of unsaturated fatty acid, and stir for 15-30 minutes Allow to mix well, then add 5-15 parts of foaming agent to obtain a homogeneous solution. Dissolve 15-20 parts of alkali in water (the weight ratio of the above-mentioned substances to water is 1:1-5), then slowly add to the above-mentioned solution, stir for 30-60 minutes at 30-35°C to make it fully saponified , to obtain a hematite reverse flotation desiliconization collector.

[0024] The hydroxy fatty acids used include hydroxyoleic acid, ricinoleic acid, hydroxystearic acid and mixtures thereof;

[0025] The sulfonated fatty acids used include sulfonated oleic acid, sulfonated tall oil, etc.;

[0026] The unsaturated fatty acids used include oleic acid, linoleic acid, linolenic acid and tall oil.

[...

Embodiment 1

[0032] Weigh 25 parts of hydroxystearic acid, 35 parts of sulfonated oleic acid and 20 parts of linoleic acid, mix the three fatty acids at room temperature, stir for 15-30 minutes, then add 10 parts of foaming agent BK204, and continue stirring for 15 minutes to obtain a homogeneous solution. Dissolve 15 parts of sodium hydroxide in 100 parts of water, then slowly add it to the above solution, stir evenly at 30-35°C to fully saponify it, and obtain a hematite reverse flotation desiliconization collector.

[0033] Reverse flotation desiliconization test of a medium and low-grade hematite in Anshan Iron and Steel Co., Ltd.: the Fe grade of the selected ore sample is 41.04%, the pH of the slurry is adjusted to 11-12, the dosage of hematite inhibitor starch is 1200g / t, and the dosage of quartz activator calcium oxide is 500g / t t, the amount of collector is 800g / t, and the flotation temperature is 15°C. After a rough separation, an iron concentrate with a Fe grade of 57.24% can be...

Embodiment 2

[0035] Weigh 20 parts of hydroxyoleic acid, 40 parts of sulfonated oleic acid and 20 parts of tall oil, mix the three fatty acids at room temperature, stir for 15-30 minutes, then add 10 parts of foaming agent MIBC, and continue stirring for 15 minutes to obtain a homogeneous solution. Dissolve 16 parts of sodium hydroxide in 100 parts of water, then slowly add it to the above solution, stir evenly at 30-35°C to fully saponify it, and obtain a hematite reverse flotation desiliconization collector.

[0036] Reverse flotation desiliconization test of a medium and low-grade hematite in Anshan Iron and Steel Co., Ltd.: the Fe grade of the selected ore sample is 41.04%, the pH of the slurry is adjusted to 11-12, the dosage of hematite inhibitor starch is 1200g / t, and the dosage of quartz activator calcium oxide is 500g / t t, the amount of collector is 800g / t, and the flotation temperature is 15°C. After a rough separation, an iron concentrate with a Fe grade of 57.11% can be obtaine...

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Abstract

The invention provides a hematite anti-flotation collector as well as a preparation method and a use method thereof and relates to a low-temperature hematite anti-flotation desilication anionic collector especially suitable for quality improvement and impurity removal of mid-and-low grade iron ore concentrates as well as a preparation method and a use method of the hematite anti-flotation collector. The collector is characterized by being prepared by mixing hydroxy fatty acid, sulfonated fatty acid and unsaturated fatty acid, adding a foaming agent and performing saponification. The preparation process comprises the following steps: uniformly mixing the hydroxy fatty acid, sulfonated fatty acid and unsaturated fatty acid, then adding the foaming agent and finally performing saponification. The collector has the characteristics of wide raw material source, simple preparation process, good solubility property, good selectivity, less dosage and environmental friendliness, is applicable to low-temperature (15-20 DEG C) anti-flotation desilication of mid-and-low grade hematite, can be used for effectively reducing the heating energy consumption, and is obvious in economic benefits.

Description

technical field [0001] A hematite reverse flotation collector and a preparation and use method thereof, relating to a low-temperature hematite reverse flotation desiliconization anion collection that is especially suitable for upgrading the quality and reducing impurities of medium and low-grade iron concentrates Agents and methods for their preparation and use. Background technique [0002] my country's iron ore resources are rich in reserves, but with the rapid development of my country's economy, the rich ore that is easy to beneficiated is gradually exhausted, and the characteristics of poverty, fineness, and miscellaneous are prominent, which makes the cost of ore dressing increase year by year and it is difficult to produce high-quality iron concentrate. To a certain extent, it restricts the development of my country's iron and steel industry, and at the same time poses a severe challenge to the comprehensive utilization of iron ore resources. [0003] For refractory l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/008B03D101/02
Inventor 张行荣郑桂兵尚衍波何发钰吴卫国张杰何伟罗科华
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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