Aluminum hydroxide dehydrating agent and preparation method thereof

A technology of aluminum hydroxide and dehydrating agent, applied in chemical instruments and methods, separation methods, inorganic chemistry, etc., can solve the problems of unknown composition of dehydrating agent, high price of dehydrating agent, inconvenient use, etc., and achieve the effect of energy saving and consumption reduction , The effect of low raw material price and green environmental protection use

Inactive Publication Date: 2013-03-20
CHINA RES INST OF DAILY CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently used dehydrating agents have problems such as high price, poor performance, and inconvenient use, and there are no relevant research reports on the composition of dehydrating agents

Method used

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  • Aluminum hydroxide dehydrating agent and preparation method thereof
  • Aluminum hydroxide dehydrating agent and preparation method thereof
  • Aluminum hydroxide dehydrating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Raw material weight percentage is composed of:

[0029] C12-14 fatty alcohol polyoxyethylene ether carboxylate (EO=5) 15%

[0030] C12-14 fatty alcohol polyoxyethylene ether (EO=9) 5%

[0031] C12-14 Alkyl Trimethylammonium Bromide 3%

[0032] Ethanol 2%

[0033] water balance

[0034] Preparation:

[0035] Raw materials are composed according to their weight percentages. Heat 60% of the total required water to 40°C, add C12-14 fatty alcohol polyoxyethylene ether carboxylate (EO=5) and C12-14 fatty alcohol polyoxyethylene ether ( EO=9), stir until the material is completely dissolved and transparent, adjust the pH to 8 with sodium hydroxide, then add C12-14 alkyltrimethylammonium bromide and ethanol, continue stirring until the material is dissolved and transparent, add the rest of the water, and stir Uniformly obtain the described aluminum hydroxide dehydrating agent.

Embodiment 2

[0037] Raw material weight percentage is composed of:

[0038] C12-14 fatty alcohol polyoxyethylene ether sulfate (EO=3) 20%

[0039] C12-14 fatty alcohol polyoxyethylene ether (EO=15) 3%

[0040] Bis C16-18 alkyl dimethyl ammonium chloride 1%

[0041] n-octanol 1%

[0042] water balance

[0043] Preparation:

[0044] Raw materials are composed according to their weight percentages. Heat 70% of water to 70°C, add C12-14 fatty alcohol polyoxyethylene ether sulfate (EO=3) and C12-14 fatty alcohol polyoxyethylene ether (EO=15), Stir until the material is completely dissolved and transparent, adjust the pH to 6 with sodium hydroxide, then add bis-C16-18 alkyl dimethyl ammonium chloride and n-octanol, continue stirring until the material is dissolved and transparent, add the rest of the water, and stir evenly to obtain Described aluminum hydroxide dehydrating agent.

Embodiment 3

[0046] Raw material weight percentage is composed of:

[0047] C16-18 fatty alcohol polyoxyethylene ether sulfonate (EO=9) 10%

[0048] C12-14 fatty alcohol polyoxyethylene ether (EO=5) 10%

[0049] Bis C12-14 alkyl dimethyl ammonium chloride 2%

[0050] Isopropanol 3%

[0051] water balance

[0052] Preparation:

[0053] Raw materials are composed according to their weight percentages. Heat 70% of water to 60°C, add C16-18 fatty alcohol polyoxyethylene ether sulfonate (EO=9) and C12-14 fatty alcohol polyoxyethylene ether (EO=5) , stir until the material is completely dissolved and transparent, adjust the pH to 7 with sodium hydroxide, then add bis C12~14 alkyl dimethyl ammonium chloride and isopropanol, continue stirring until the material is dissolved and transparent, add the rest of the water, and stir evenly Promptly obtain described aluminum hydroxide dehydrating agent.

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Abstract

The invention discloses an aluminum hydroxide dehydrating agent which consists of the following raw materials by weight percent: 10-20 percent of polyoxyethylene type anionic surfactant, 3-10 percent of polyoxyethylene type nonionic surfactant, 1-3 percent of quaternary ammonium salt cationic surfactant, 1-3 percent of cosolvent and the balance of water. The aluminum hydroxide dehydrating agent has the advantages of being convenient to use, low in cost and obviously reducing moisture content of aluminum hydroxide filter cake during aluminum hydroxide production.

Description

technical field [0001] The invention belongs to a dehydrating agent and a preparation method thereof, in particular to a dehydrating agent used for reducing the water content of aluminum hydroxide filter cake in the production of aluminum hydroxide and a preparation method thereof. Background technique [0002] The aluminum industry is a high-energy-consuming industry, and the energy-saving work of the aluminum industry is particularly important. Alumina is the main raw material for light metal aluminum smelting. In the production of alumina, the water content of the intermediate product aluminum hydroxide not only directly affects the quality of the product, the consumption of raw materials and energy, but also affects the amount of circulating water and the impact on the environment. degree of pollution. The use of aluminum hydroxide dehydrating agent can reduce the moisture content of aluminum hydroxide filter cake, increase production capacity, reduce heat consu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26C01F7/44B01D37/02
Inventor 李运玲李秋小张明慧智丽飞宋永波
Owner CHINA RES INST OF DAILY CHEM IND
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