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Method for preparing slime dispersant applicable to primary slime and secondary slime

A secondary slime and dispersant technology, applied in the field of slime dispersant preparation suitable for primary and secondary slimes, can solve the problem of reducing the utilization rate of mineral resources, failure of valuable minerals to be recycled, and dispersion inhibition Limited effect and other problems, to achieve the effect of improving the quality of concentrate and recovery rate, stable product quality and improving recovery rate

Inactive Publication Date: 2011-05-04
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these inorganic modifiers have limited inhibitory effects on the dispersion of ore slime. When selecting ores with a higher degree of oxidation and weathering and higher clay mineral content or higher grinding fineness, a large amount of primary and secondary ore slimes are used. The sorting operation cannot be carried out normally, and the desliming operation has to be added in the process flow, the slime is removed first, and then the sorting operation is carried out later, and the ore slime often contains certain valuable minerals. Minerals are not recycled, thus reducing the utilization rate of mineral resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weighing monomers totaled 320 kg, including 40 kg of sodium propylene sulfonate, 160 kg of maleic anhydride, and 120 kg of acrylic acid. Prepare acrylic acid aqueous solution with a concentration of 50%, ammonium persulfate aqueous solution with a concentration of 20%, and sodium propylene sulfonate aqueous solution with a concentration of 20% with clear water, and prepare them in respective high-level tanks with vacuum, and prepare 15 kg of ammonium persulfate , at 1M 3Add 320 kg of water into the glass-lined reactor, start stirring, and heat the jacket with steam. Add all the maleic anhydride, 12 kg of isopropanol and 16 kg of mercaptoacetic acid, stop the steam when the temperature rises to 82°C, start adding ammonium persulfate solution through the rotameter, and then add sodium propylene sulfonate through the rotameter at the same time and acrylic acid solution, keep the reaction temperature at 82-88°C with a small amount of reflux, add all the sodium propylene su...

Embodiment 2

[0034] A low-grade oxidized gold ore contains 1.67 g / t of gold, 0.0037% of sulfur, 62.3% of silicon, and 4.46% of iron. The content of other metal minerals is very small, and only gold has comprehensive recycling value. This ore is a typical high-silicon, low-sulfur, highly oxidized ore with high content of clay minerals. Gold exists in clay minerals and limonite in the form of fine particles and sub-microscopic particles. Gold cannot be separated by gravity separation, magnetic separation, or The methods of flotation of sulfide or oxide ores are effectively enriched, and gold can usually only be extracted by cyanide heap leaching. Although the leaching rate of stirring cyanidation leaching gold after grinding can reach 94%, the economic benefit of cyanidation heap leaching gold extraction will not be good due to the low grade of raw ore. Low.

[0035] The organic acid terpolymer ore synthesized by the present invention is used as the mud dispersant, and the dosage is 400g / t ...

Embodiment 3

[0037] my country's clay vanadium ore resources are widely distributed, but their grades are low, and flotation, gravity separation, and magnetic separation cannot be used to enrich them. At this stage, enterprises can only choose vanadium containing V 2 o 5 Raw ore with a grade higher than 1.2% uses raw ore oxidative roasting-wet leaching to extract vanadium. The processing capacity of raw ore is large, the consumption of auxiliary materials and energy consumption is high, and the environmental pollution is serious. The recovery rate of vanadium is only 40-50%. High cost, poor economic benefits, low-grade clay vanadium ore can not be effectively developed and utilized, serious waste of resources.

[0038] The present invention is aimed at a domestic raw ore containing V 2 o 5 The clay vanadium ore with a grade of 0.84% ​​is crushed to -3mm, and a 1.5-liter scrubbing machine is used to stir at a linear speed of 2.3m / s. Add water to adjust slurry, pulp concentration is 50%, ...

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Abstract

The invention discloses a method for preparing slime dispersant which is applicable to primary slime and secondary slime. Under the redox initiation system of thioglycolic acid-ammonium persulfate, three polymeric monomers, namely, sodium allylsulfonate, maleic anhydride and acrylic acid, are processed by the operation of radical polymerization in an aqueous solution; and higher evocating agent dosage, higher reaction temperature and the addition of molecular weight regulator-isopropanol are used for controlling the molecular weight of the polymers so as to obtain a low molecular weight terpolymer aqueous solution. After the reaction is accomplished, liquid industrial sodium hudroxide is used for neutralizing the PH value to 6-8, and finally the slime dispersant can be obtained. The slime dispersant prepared by the method of the invention has favorable effect of dispersing the primary slime and the secondary slime in metal and non-metal mineral processes, can effectively eliminate or reduce the influence of the slimes on the concentration and the separation of mineral processing of target minerals, improve the efficiency of the concentration and the separation of mineral processing and increase the concentrate quality and the recovery ratio of the target minerals, and can also be used for dispersing the slime in the processes of petroleum extracting and drilling.

Description

technical field [0001] The invention relates to a preparation method of a slime dispersant suitable for primary and secondary slimes, which belongs to the field of industrial fine chemical additives. The slime dispersant prepared by the method can be widely used in various metal and non-metallic minerals Disperse the primary and secondary slime during the beneficiation process, eliminate or reduce the impact of the slime on the beneficiation, enrichment and separation of the target minerals, improve the efficiency of the beneficiation, enrichment and separation, and improve the concentrate quality and recovery rate of the target minerals; It can be used to disperse ore slime in geological drilling and oil extraction to improve operating efficiency and oil yield. Background technique [0002] At present, in the process of developing and utilizing mineral resources and comprehensively recovering target minerals, various metal and non-metal mining enterprises usually separate, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/06C08F220/06C08F228/02
Inventor 杨进忠刘厚明陈炳炎陈晓青毛益林王秀芬
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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