Process for preparing basic aluminum nitrate solid powder
A technology of solid powder and aluminum nitrate, which is applied in the preparation of aluminum nitrate, nitric acid, aluminum oxide/hydroxide, etc., can solve the problems of difficult transportation and cost control, and achieve increased production efficiency, accelerated thermal decomposition rate, and low cost Effect
Inactive Publication Date: 2021-12-21
宁波大浦新材料科技有限公司
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Problems solved by technology
The solutions produced by these two types are acidic and easy to transport, and using metal aluminum as a raw material is also extremely difficult for cost control
Method used
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Embodiment 2
[0070] In the present invention, the aluminum nitrate crystals can be pulverized without heating by compressed air, and then the hydrogen chloride and water can be removed by using a roasting furnace or a fluidized bed to heat equipment. Process route such as image 3 shown.
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The invention discloses a process for preparing basic aluminum nitrate solid powder. The process is characterized in that a fluidized drying and crushing device is utilized to dry and crush aluminum nitrate crystals to prepare the basic aluminum nitrate solid powder, and the process comprises the following steps: SO1, the aluminum nitrate crystals are used as raw materials, and fluidized airflow is utilized to vulcanize the aluminum nitrate crystals; SO2, the fluidized aluminum nitrate crystals and fluidizing air flow are injected into a mixing cavity, the fluidized aluminum nitrate crystals collide under disturbance of annular air flow in the mixing cavity, the aluminum nitrate crystals are dried by hot air in the mixing cavity, and basic aluminum nitrate solid powder is obtained; and S03, the tail gas from which the basic aluminum nitrate solid powder is filtered is collected, and a by-product nitric acid in the tail gas is collected. Compared with the prior art, the novel technology adopted by the invention has the advantages that the raw materials are improved, simple substance aluminum commonly used in the field of preparation of basic aluminum nitrate at present is removed, and toxic gas and flammable and explosive hydrogen are not generated in the whole process.
Description
technical field [0001] The invention belongs to the technical field of aluminum nitrate preparation, in particular to a process for preparing basic aluminum nitrate solid powder. Background technique [0002] Basic aluminum nitrate, or the molecular basic formula is Al 2 (OH) n NO 3(6-n) , usually form a translucent to transparent viscous colloid in an aqueous solution. Observe the colloidal particles from a microscopic angle. The colloidal particles are positively charged and have a feathery microstructure. In industrial applications, they are often classified as aluminum sols. It can be widely used in the fields of petrochemical catalysts, aluminum silicate fibers, ceramics, and high-temperature resistant production. At the same time, it also has huge application space in the fields of inorganic fibers, activated alumina, high-purity alumina, enamel, and papermaking. After its large-scale production, it soon replaced the position of silicon solution in the market, and b...
Claims
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IPC IPC(8): C01F7/66C01F7/30C01B21/40
CPCC01F7/66C01F7/308C01B21/40C01P2006/80C01P2004/60C01P2004/61C01P2004/62C01P2004/01
Inventor 华峰君管沛林邹新国
Owner 宁波大浦新材料科技有限公司