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Alpha-aminodihydroxy fatting acid soap collector as well as preparation method and application thereof

A technology of amino bishydroxy fatty acid and amino epoxy fatty acid, which is applied in the field of α-amino bishydroxy fatty acid soap collector and its preparation, can solve the problem that the mineral processing requirements of collophosphate ore cannot be met, the mineral processing cost is increased, and the foam fluidity is poor. good collection performance, low beneficiation cost, and increased conductivity

Inactive Publication Date: 2018-11-16
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the interbedded relationship between collophosite and dolomite in these collophosites is complex, requiring high grinding fineness, and the production cost of mineral processing has increased significantly. In recent years, the development of flotation agents has mainly focused on the multifunctionalization of the hydrophilic end, Currently commonly used fatty acid collectors have poor foam fluidity, resulting in low separation efficiency, poor selectivity, intolerance to hard water, poor water solubility, and poor low-temperature performance, which cannot meet the beneficiation requirements of this type of collophanite.

Method used

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  • Alpha-aminodihydroxy fatting acid soap collector as well as preparation method and application thereof
  • Alpha-aminodihydroxy fatting acid soap collector as well as preparation method and application thereof
  • Alpha-aminodihydroxy fatting acid soap collector as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare α-amino dihydroxy fatty acid soap collector, concrete steps are as follows:

[0026] Take 42.2g of α-amino oleic acid in a beaker, slowly add 0.8g of 98% concentrated sulfuric acid and 10.8g of peracetic acid, stir and heat up to 60°C for 8 hours at a heating rate of 1°C / min, and react for 8 hours after the reaction is completed. The solution was transferred to a separatory funnel, the aqueous solution of the lower layer was separated, and the organic phase was washed several times with water to obtain α-aminoepoxy fatty acid.

[0027] Ingredients according to weight percentage, take 25g α-amino epoxy fatty acid, 10g stearic acid, 5g sodium hydroxide, 20g water and 0.04g diethyl phthalate, put them in a flask, mix well, heat to 120°C and stir to react 6 Hours, after the reaction is completed, the material is discharged and cooled to obtain the α-amino dihydroxy fatty acid saponin phosphate rock collector.

[0028] figure 1 It is the infrared spectrogram of the...

Embodiment 2

[0031] Prepare α-amino dihydroxy fatty acid soap collector, concrete steps are as follows:

[0032] Take 211g of α-aminooleic acid in a beaker, slowly add 6g of 98% concentrated sulfuric acid and 75g of peracetic acid, stir and heat up to 100°C for 4 hours at a heating rate of 2°C / min, and then transfer the reaction solution to In the separatory funnel, separate the lower aqueous solution, and wash the organic phase with water several times to obtain α-aminoepoxy fatty acid.

[0033] Ingredients according to weight percentage, take 100g of α-amino epoxy fatty acid, 83.33g of stearic acid, 25g of sodium hydroxide, 83.33g of water and 0.5g of diethyl phthalate in a flask, mix well, heat to 80°C and stir React for 8 hours. After the reaction is completed, the material is discharged and cooled to obtain the α-amino dihydroxy fatty acid saponin phosphate rock collector.

Embodiment 3

[0035] The α-amino dihydroxy fatty acid soap colloidal phosphate rock collector prepared in embodiment 1 and embodiment 2 is used respectively as a collector, and a reverse flotation process is used to carry out forward-reverse flotation to a certain collyne phosphate rock in Dayukou, Hubei, The chemical composition of the main elements is shown in Table 1:

[0036] Table 1

[0037]

[0038] The specific flotation method is:

[0039]1. Positive flotation: Grind the collophosite until the mass fraction of the grinding fineness -0.074mm reaches 85-90%, pour it into the flotation tank, add water to obtain a pulp with a mass concentration of 35%, and use 10% sodium carbonate The solution adjusts the pH value of the pulp to 9-10, and adds sodium silicate to inhibit silicate, and then adds a small amount of sodium hexametaphosphate to act as a dispersant to prevent the ore particles from agglomerating, and at the same time inhibit other metal ions, and then α-Amino dihydroxy fa...

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Abstract

The invention relates to an alpha-aminodihydroxy fatting acid soap collector as well as a preparation method and application thereof. A structural formula of the alpha-aminodihydroxy fatting acid soapcollector is shown in the following description, wherein C8H17 is a linear-chain octacarbon alkyl group. The collector provided by the invention has efficient selectivity to dolomite, is strong in ore carrying ability, small in dosage of a reagent and good in foam flowability, can be used for desilicication with positive selection and also magnesium removal with reversed selection, has better sorting feature to Ca2+ ions and Mg2+ ions, has good collecting performance, has the mineral processing comprehensive efficiency of 82.91-84.64 percent, is available in raw material and low in mineral processing cost, can perform low-temperature flotation at about 10 DEG C and is suitable for the field of collophanite flotation.

Description

technical field [0001] The invention relates to a collector, in particular to an alpha-amino dihydroxy fatty acid soap collector and a preparation method thereof. Background technique [0002] Collephate is the basic raw material of phosphate fertilizer and phosphate, which plays a very important role in agricultural production and food security. my country's phosphate rock is "abundant but not rich". Currently, the grade of collophosite mined is generally 17-18%P 2 o 5 . The grade of phosphate ore directly processed to produce phosphate fertilizer and phosphate must be greater than 28%P 2 o 5 , so these mined collophanites must be enriched by flotation before they can be processed and utilized. Moreover, the interbedded relationship between collophosite and dolomite in these collophosites is complex, requiring high grinding fineness, and the production cost of mineral processing has increased significantly. In recent years, the development of flotation agents has mainl...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/02B03D103/06
CPCB03D1/018B03D2201/02B03D2203/06
Inventor 潘志权李信周红程清蓉张华丽
Owner WUHAN INSTITUTE OF TECHNOLOGY
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