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Combined use method for iron ore anion reverse floatation agent

An iron ore and anion technology, applied in flotation, solid separation, etc., can solve the problems of insignificant effect, high reagent consumption, wide application limitations, etc., to reduce the unit consumption of reagents, improve the beneficiation effect, and good selectivity Effect

Inactive Publication Date: 2005-10-26
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many modified varieties of fatty acid anionic collectors obtained in this way, but the effects are not very significant, and the consumption of chemicals is high, so the wide application is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] When corn starch is used as the inhibitor for reverse flotation, the mixed magnetic concentrate after the hematite sample is finely ground to -200 mesh, accounting for about 85%, and the grade is about 30%, is flicked by weak, medium and strong magnetic tailing. About 46% is used as ore feed for flotation, and it is adjusted to a concentration of about 35%, and the temperature is controlled at 30°C. The dosing amount for flotation feed is 900g / t of pH regulator NaOH and 700g of inhibitor corn starch / t, then add the activator CaO330g / t to the pulp, and finally add the collector oleic acid 254g / t, the grade of iron concentrate can be 65.75%, the recovery rate of flotation operation is 88.39%, the good index of the four chemicals The amount range can be determined according to the specific conditions of the ore. For raw ore, the dosing amount is about half of that for flotation, and industrial oleic acid and corn flour need to be saponified before use. Described industri...

Embodiment 2

[0011] When carboxymethyl starch is selected as the inhibitor for reverse flotation, the mixed magnetic concentrate of the hematite sample with a fine grinding of -200 mesh, accounting for about 85% and a grade of about 30% after weak, medium and strong magnetic tailing, The grade reaches about 46% as the flotation feed, adjust it to a concentration of about 35%, and the temperature is controlled at 30°C. Methyl starch 500g / t, then add activator CaO330g / t to the pulp, and finally add collector industrial oleic acid 254g / t, can obtain iron concentrate grade 66.45%, flotation operation recovery rate 87.94% good index , the dosage range of the four agents can be determined according to the specific conditions of the ore. For raw ore, the dosing amount is about half of that for flotation, and industrial oleic acid needs to be saponified before use. Carboxymethyl starch is not saponified. Using industrial oleic acid and the R disclosed by Chinese patent ZL94110823.6 A -315 is us...

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Abstract

The iron core is fine-ground to attain the basis monomer dissociation, and made into ore slurry with proper concentration, then regulating agent NaOH is added and stirred, and the inhibitor saponified corn starch is added and stirred, and then the activating agent CaO is added and stirred, and finally collecting agent is added, fully stirred so as to obtain the invented product. It is characterized by that the saponified industrial oleic acid in adopted as said invented floatation collecting agent.

Description

technical field [0001] The invention belongs to the field of ore flotation, in particular to a combined use method of iron ore anion reverse flotation reagents. Background technique [0002] At present, the collectors used in the iron ore reverse flotation process are mostly anionic and cationic. However, the existence of anionic collectors in reverse flotation needs to be specially produced for the mineral processing industry, and the production process is complicated. Disadvantages such as polluting the environment and high cost. In the iron ore beneficiation of the United States, the former Soviet Union, European countries and my country, anionic fatty acids are still one of the indispensable agents, but due to the poor collection and selectivity of the existing reverse flotation anion collectors, they are not resistant to low temperature. Therefore, a lot of research work has been done on its processing and modification at home and abroad, mainly by introducing high pol...

Claims

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Application Information

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IPC IPC(8): B03D1/018
Inventor 刘桂云陈明学苏兴国
Owner ANSTEEL GRP MINING CO LTD
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