Batch charging method and automatic charging equipment for aluminum powder in production process of aluminum sol

Abstract

The invention belongs to the field of aluminum sol production, and discloses automatic charging equipment in production process of aluminum sol in order to solve the problems in the prior art, the automatic charging equipment comprises a water storage barrel, an aluminum powder storage barrel, an aluminum powder feeding assembly, a weighing assembly, an air storage tank, a mixing assembly, a reaction kettle and a flushing assembly, a third motor drives a screw rod to conduct accurate feeding, the weight loss of the aluminum powder can be accurately weighed through a pressure sensing block; a first stirring paddle is used for fully mixing the aluminum powder and the water and keeping the aluminum powder not to settle in the water; waste gas generated in the reaction tank is protected, so that danger is avoided; and a universal joint rotates to drive a spray head to rotate to spray and wash the interior of a mixing tank, and it is guaranteed that all aluminum powder is flushed into the reaction tank. The invention further discloses an aluminum powder batch feeding method in the aluminum sol production process, the problem that the aluminum powder drifts away when being directly added into the reaction container under the high-temperature and high-humidity conditions is solved, and it is guaranteed that the aluminum powder smoothly enters the reaction tank under the high pressure.

Description

technical field [0001] The invention belongs to the field of aluminum sol production equipment, and in particular relates to a batch-feeding method of aluminum powder in the aluminum sol production process and automatic feeding equipment. Background technique [0002] Alumina sol is a kind of colloidal particles with positive charge, Tyndall effect, wide viscosity range, pH between 3.5-4.5, widely used in textile, paper, ceramics, refractory materials and inorganic fiber industries. molecular polymer. There are also many production methods, including organic aluminum salt hydrolysis method, inorganic salt hydrolysis catalytic method, pseudo-boehmite acidification method, metal aluminate reaction method, etc. The aluminum sol obtained by different preparation methods is suitable for different industrial production needs . [0003] In the field of aluminum sol prepared by reacting aluminum powder with acid, the current production method is mainly to prepare spinnable aluminu...

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Problems solved by technology

[0004] However, due to the water vapor generated in the reaction equipment, the released polluting gas, high temperature, high pressure and other reasons during the production process, the addition of aluminum powder is greatly restricted during the production operation; at present, artificial methods are often used to add aluminum in the production process. Powder, not only easy to produce large measurement errors, but also cause repeated quantitative addition difficulties, affecting production efficiency; at the same time, it has great dangers in the reaction process, such as dust pollution, polluting gas volatilization, etc.; When the slurry is injected into the reaction kettle, there will be residual bonding in the mixing tank, which will affect the production efficiency and quality; and the original process route is to add aluminum powder to the reaction aluminum salt solution at one time, and the reaction process temperature can reach 80-120°C , the reaction liquid level in the kettle rises, accompanied by the generation of flammable gases such as water vapor, nitrogen oxides or hydrogen, and the pressure in the reactor can reach 10-100KPa

Due to the above reasons, the amount of one-time feeding is limited, and manual operation is difficult to achieve secondary or even multiple feeding, which not only has too much artificial influence on the production quality of aluminum sol, but also limits the production capacity of aluminum sol

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