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Cellophane direct flotation collecting agent and method for preparing same

A positive flotation, collector technology, applied in flotation, solid separation and other directions, can solve the problems of environmental pollution and human health impact, environmental water quality and human harm, chemical toxicity, etc., to achieve excellent flotation indicators, environmental protection Significant benefits and low cost effects

Inactive Publication Date: 2013-10-09
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the components of some collectors are more specific to certain collophosite, heating flotation can make it achieve a better flotation index, but some components are chemically toxic, which is harmful to environmental pollution and human health. will have a major impact
For example, for phosphate rock in a certain area, aromatic hydrocarbon compounds containing hydroxyl groups are used as collector components. Due to the potential toxicity of carcinogenic, teratogenic and mutagenic substances, these substances will cause certain harm to environmental water quality and human body

Method used

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  • Cellophane direct flotation collecting agent and method for preparing same
  • Cellophane direct flotation collecting agent and method for preparing same
  • Cellophane direct flotation collecting agent and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First add 0.2kg of cotton oil residue, 0.06kg of stearic acid and 0.54kg of industrial oleic acid into the reaction kettle, then slowly add 0.2kg of sodium hydroxide into a 20% aqueous solution, heat to 85°C, Stir the mixture for 3 hours at a speed of 1 min until it is evenly mixed. After cooling, the positive flotation collector is obtained. After weighing and calculating its solid content (solid content = mass of raw materials except water / total mass of collector) Add water to prepare 2wt% aqueous solution for positive flotation.

Embodiment 2

[0026] First add 0.2kg of cotton oil residue, 0.22kg of lauric acid and 0.33kg of industrial oleic acid into the reaction kettle, then slowly add 0.05kg of sodium hydroxide into a 15% aqueous solution, heat to 65°C, and set the temperature at 1700r / min Stir the mixture for 2.5 hours at a constant speed, cool to 60°C, add 0.2 kg of chlorinated fatty acid citrate, and stir until evenly mixed to obtain the positive flotation collector. After weighing and calculating its solid content, add water to prepare 2 wt % solution for positive flotation.

[0027] The positive flotation collectors prepared in Example 1 and Example 2 were used to carry out positive flotation to the refractory collophanite. The method of positive flotation adds Na 2 CO 3 Regulates pH and inhibits Ca 2+ , Mg 2+ , Na 2 SiO 3 Inhibit SiO 2 , (NaPO 4 ) 6 Various metals are suppressed, and then the positive flotation collector involved in the present invention is added to float the useful collophanite.

...

Embodiment 3

[0033] First add 0.8kg of cotton oil residue, 0.04kg of lauric acid and 0.06kg of industrial oleic acid into the reaction kettle, then slowly add 0.05kg of sodium hydroxide into a 35% aqueous solution, heat to 115°C, and heat at 1800r / min Stir the mixture for 2 hours at a constant speed, cool to 60°C and add 0.05kg of chlorinated fatty acid citrate, stir until evenly mixed to obtain the positive flotation collector, weigh and calculate its solid content, add water to prepare 2wt% The solution was subjected to positive flotation.

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Abstract

The invention relates to a cellophane direct flotation collecting agent and a method for preparing the cellophane direct flotation collecting agent, in particular to a novel cellophane direct flotation collecting agent which is formed by modification and compounding of fatty acid and the like. The method for preparing the cellophane direct flotation collecting agent comprises the steps that by weight, 20%-80% of cotton oil residues and 10%-60% of higher fatty acid are respectively added to a reaction still, strong base solution with any concentration is slowly added to the reaction still, the use amount of strong base is 5%-20% within the temperature of 60DEG C-150DEG C, the solution in the reaction still is well stirred at the speed of 500-2500rad / min, is cooled to the temperature of 60DEG C or so, then 0-20% of chlorinated fatty citric acid acids ester is added to the solution and the solution is well stirred, and accordingly the cellophane direct flotation collecting agent is obtained. The cellophane direct flotation collecting agent is high in selectivity and cellophane-carrying capability, has good sorting effect under a normal temperature, and can reach an excellent flotation index.

Description

technical field [0001] The invention relates to a new collephosite positive flotation collector and a preparation method thereof, in particular to a collophosite novel positive flotation collector which is modified and compounded from fatty acids and the like. Background technique [0002] Phosphate ore is an important chemical mineral raw material, and phosphate concentrate is widely used in industrial and agricultural fields. But for now, there are not many rich ores available for development in the world's phosphate rock resources, and most of them are lean ores. In my country, the average grade of phosphate rock is only 17%, and more than 75% of the phosphate rock belongs to low- and medium-grade collophosphine. With the gradual deepening of phosphate rock mining, the embedded particle size of collophosite becomes finer and finer, the silicate content increases, and the phosphorus grade gradually decreases. The development of highly selective and efficient positive flo...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/02
Inventor 黄齐茂刘璇潘志权
Owner WUHAN INSTITUTE OF TECHNOLOGY
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