Use of quaternaries compound in floating silicate mineral and silicate mineral floating trapping agent

A technology of salt compounds and silicate minerals, applied in flotation, solid separation, etc., can solve problems in the field of flotation of silicate minerals that have not been seen, and achieve excellent collection capacity, good flotation desilication efficiency, The effect of strong harvesting ability

Active Publication Date: 2011-03-30
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its unique double-hydrophobic long carbon chain and double-hydrophilic group configuration, it exhibits many unique properties compared with traditional surfactants, and can be used as a wetting agent, solubilizer, bactericide, templating agent, and anti-adhesive agent and corrosion inhibitors, but there is no report on its application in the field of silicate mineral flotation

Method used

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  • Use of quaternaries compound in floating silicate mineral and silicate mineral floating trapping agent
  • Use of quaternaries compound in floating silicate mineral and silicate mineral floating trapping agent
  • Use of quaternaries compound in floating silicate mineral and silicate mineral floating trapping agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Put silicate minerals (kaolinite, illite, pyrophyllite and quartz) with a particle size of -0.074mm in a 50mL flotation tank, add 30mL of distilled water, and stir for 1min to make it evenly mixed. The value is 8.0, and the flotation is carried out under the condition of a collector dosage of 150g / t. Table 1 shows the flotation comparison test results of the four double quaternary ammonium salt cationic collectors in the present invention and the two commonly used collectors dodecylamine and dodecyltrimethylammonium chloride. It can be seen from the table that the collector capacity of double quaternary ammonium compounds for kaolinite, illite, pyrophyllite and quartz is significantly stronger than the two commonly used cationic collectors.

[0025] Table 1 Collector comparison experiment results

[0026]

Embodiment 2

[0027] Example 2: A sample of a bauxite ore in Henan, the raw ore contains Al 2 O 3 62.63%, SiO 2 10.68%, the aluminum-silicon ratio is 5.86; the ore is ground to -0.074mm, which accounts for 80%, the flotation slurry concentration is 27%, and the pH of the slurry is adjusted to 10 with sodium carbonate; the process of one roughing and three beneficiating processes is adopted, and the solubility is added to the roughing Starch 300g / t, add 200g / t of collector butyl-α,ω-bis(dimethyl dodecyl ammonium chloride), select 20g / t of collector to obtain Al 2 O 3 68.51%, SiO 2 6.09% of the flotation concentrate, the aluminum-silicon ratio of the concentrate reaches 11.36, Al 2 O 3 The recovery rate was 82.48%.

Embodiment 3

[0028] Example 3: A magnetite ore in the northeast, ground to -0.074mm accounting for 78%, add water to adjust the slurry to a mass concentration of 25%, add sodium carbonate to adjust the slurry pH to about 9.0, and then add dodecylamine and dodecane Trimethylammonium chloride and the double quaternary ammonium salt compound compound of the present invention were subjected to two reverse flotation open circuit tests, one coarse and one fine, and the results shown in Table 2 were obtained.

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PUM

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Abstract

The invention relates to the field that biquaternary ammonium compounds are applied in silicate mineral flotation, and discloses a collector which applies the biquaternary ammonium compound with the constitutional formula shown as the formula I in bauxite or ironstone reverse flotation desiliconization. In the formula I, R<1> and R<2> are alkyls with 6-18 carbon atoms; R<3>, R<4>, R<5> and R<6> are respectively methyl, ethyl, -(CH2CH2O)nH, or -(CH(CH3)CH2O)nH, wherein, n is equal to 1-6; R<7> is alkylene with 2-6 carbon atoms; and X is Cl, Br or I. The collector of the invention has strong ability to collect quartz, kaolinite, illite and pyrophyllite, and is applicable to the silicate mineral separation from the bauxite or ironstone by reverse flotation, the suitable pH range of the flotation pulp is 5-13, and the dosage is equal to 50-500 g / t according to the content change of the silicate mineral in ores.

Description

[Technical Field] [0001] The invention relates to a flotation collector for silicate minerals, in particular to the application of double quaternary ammonium salt compounds in the reverse flotation desiliconization of bauxite or iron ore. [Background technique] [0002] In the reverse flotation desilication process of iron ore and bauxite, the research on new and efficient flotation collectors for silicate minerals is the key factor to improve the separation index. Traditional silicate mineral flotation collectors include fatty acid anionic collectors and fatty amine cationic collectors. At present, when using fatty acid anionic collectors to desiliconize iron ore by reverse flotation, it is necessary to adjust the pH of the ore slurry to above 11, activate silicate minerals such as quartz with calcium ions, and use starch, lignosulfonate or Dextrin and other inhibitors of iron minerals have the disadvantages of many types of agents, large dosages, and high production costs. The...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B03D1/01B03D101/02
Inventor钟宏刘广义夏柳荫
OwnerCENT SOUTH UNIV