Preparation method of anhydrous aluminum trichloride
An anhydrous aluminum trichloride, ferric chloride technology, applied in aluminum chloride, aluminum halide, ferric halide and other directions, can solve the problems of high iron content in products, high cost consumption, etc., to ensure the acquisition rate, avoid wasteful effect
Pending Publication Date: 2021-02-26
衡阳鸿宇化工有限责任公司
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[0004] The purpose of the present invention is to provide a kind of preparation method of anhydrous aluminum trichloride, to solve the existing aluminum chloride that proposes in the above-mentioned background technology can be prepared by various ways, although the purity of the product that wherein metal aluminum method produces High, but the cost consumption is relatively large, and the problem of high iron content in the products obtained from the preparation of aluminum ore resources
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[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them.
[0025] An embodiment provided by the invention: a preparation method of anhydrous aluminum trichloride, comprising the steps of:
[0026] Step 1: Select kaolinite-type monohydrate bauxite as the raw material for preparation. The content of alumina in kaolinite-type monohydrate bauxite is relatively higher than that of other types of mineral materials, and the distribution The area is wide, the difficulty of obtaining materials is reduced, and the screened bauxite is washed to remove dust attachments on the surface and discharge surface impurities;
[0027] Step 2: Carry out iron removal operation on the bauxite, put the cleaned bauxite into the chemical reaction furnace, then raise the temperature of the furnace body to 650-700°C, continue...
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The invention discloses a preparation method of anhydrous aluminum trichloride, relates to the technical field of aluminum chloride preparation, and aims at solving the problems that in the prior art,existing aluminum chloride can be prepared in various modes, although the purity of a product prepared through a metal aluminum method is high, the cost consumption is relatively large, and the ironcontent in the product obtained by aluminum ore resource preparation is relatively high. The method comprises the following steps: selecting kaolinite monohydrate bauxite as a raw material for preparation, washing the screened bauxite, removing dust attachments on the surface of the bauxite, removing iron from the bauxite, putting the cleaned bauxite into a chemical reaction furnace, heating the furnace body to 650-700 DEG C, and continuously heating the ore for 30 min; injecting carbon monoxide and sulfur dioxide gas into the chemical reaction furnace, wherein the reaction equation is CO + SO2 = S (precipitate) + 2CO2; on the basis of the step 2, reducing the temperature of the chemical reaction furnace to 350-400 DEG C, and feeding chlorine, in three times by the same amount, into the chemical reaction furnace.
Description
technical field [0001] The invention relates to the technical field of aluminum chloride preparation, in particular to a method for preparing anhydrous aluminum trichloride. Background technique [0002] Aluminum chloride, chemical formula AlCl3, is aluminum chloride. Aluminum chloride has a low melting point and boiling point, and it will sublime to be a covalent compound. Molten aluminum chloride is not easy to conduct electricity. Unlike most salts containing halogen ions (such as sodium chloride), AlCl3 adopts a "YCl3" structure, which is the closest-packed layered structure of Al3+ cubic, while Al3+ in AlBr3 accounts for Br- Adjacent tetrahedral gaps of a closest-packed framework. When melting, AlCl3 generates volatile dimer Al2Cl6, which contains two three-center four-electron chlorine bridge bonds. At higher temperatures, the Al2Cl6 dimer dissociates to form a planar triangle AlCl3, which is similar in structure to BF3. Aluminum chloride is colorless and transparent...
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Login to View More IPC IPC(8): C01F7/60C01G49/10
CPCC01F7/60C01G49/10
Inventor 武红虎夏裕林谢平符锋
Owner 衡阳鸿宇化工有限责任公司