Introduction to two common production processes of pseudo boehmite

The production process of pseudo boehmite mainly involves neutralization or hydrolysis into colloidal form, followed by aging treatment. Sometimes, phenomena such as aging, crystallization, and aging may occur. So what are the common production processes for pseudo boehmite! Let's get to know more about Yangzhou Zhongtianli together

1. Acid-base neutralization method

The neutralization method involves using different aluminum containing raw materials and corresponding precipitants to undergo neutralization reactions under certain conditions to generate alumina products with amorphous alkaline phases, and then obtaining the products through multiple processing operations.

Carbonization method is a neutralization method that is not only used for the decomposition process of alumina production by sintering method, but also for the preparation of pseudo boehmite under appropriate decomposition process and equipment conditions. In fact, the carbonation method is also a neutralization method. The difference is that it forms gel during gas-liquid reaction. Using sodium aluminate solution as raw material and precipitant.

Carbonized cementation adopts a low-temperature, high-speed, and low pH cementation process. The small changes in control parameters such as initial temperature, concentration, ventilation rate, and solution pH value will directly affect the quality of cementitious products, post-treatment operations, and products, especially the key technical indicators such as crystal purity, gel solubility index, and gel solubility rate. The products of rapid gel are mostly amorphous, accompanied by a small amount of dawsonite double salt, which requires subsequent treatment, such as the aging process to obtain pseudo boehmite products that meet the use requirements.

2. Organic alkoxide method

According to the characteristics of metal aluminum producing organic compounds, aluminum alkoxides are prepared under certain conditions, and then hydrolyzed to obtain pseudo boehmite.

Compared with products produced by other processes, products prepared by hydrolysis of aluminum alcohol have advantages such as high chemical purity, fewer miscellaneous items, good crystallinity, and good gel solubility. However, the price is expensive and only suitable for the product.

The purity of pseudo boehmite produced by this method can reach 5N, with high chemical purity, large pore volume, and large specific surface area.

Above is all the relevant content shared by Zhongtianli editor. If you have any needs, please feel free to call 0514-80388763. Yangzhou Zhongtianli is a manufacturer specializing in the research, development, production, and sales of nanomaterials. We look forward to your inquiries and inquiries at any time.