Novel drying agent and preparation method thereof

Abstract

The invention discloses a novel drying agent and a preparation method thereof. The novel drying agent comprises the following components in parts by weight: 25-50 parts of minerals, 20-30 parts of silicon dioxide, 35-40 parts of iron powder, 15-20 parts of bamboo charcoal, 2-5 parts of sodium chloride, 10-30 parts of quartz sand and 5-10 parts of fiber. The novel drying agent is prepared by sequentially soaking, sieving, mixing, grinding, concentrating, drying and adding the iron powder and the fiber. The preparation method is simple in process, has low demands on equipment, and is suitable for large-scale industrial production, and the obtained drying agent has deoxygenation and drying functions and is high in cation exchange capacity, significant in deoxygenation and drying effects and high in repeated utilization rate.

Description

technical field [0001] The invention belongs to the field of desiccants, and in particular relates to a novel desiccant and a preparation method thereof. Background technique [0002] A desiccant is a dehydrating agent that absorbs moisture from the atmosphere. It physically absorbs water molecules in its own structure or chemically absorbs water molecules and changes its chemical structure to become another substance. It is suitable for preventing moisture in instruments, meters, electrical equipment, medicines, food, textiles and other various packaging items. [0003] At present, silica gel desiccant is widely used in the market, such as a silica gel desiccant disclosed in the invention patent of CN104174373A. According to the percentage by weight, silica gel: 50-70%, aluminum oxide: 12-15%, three Ferric oxide: 8-10%, calcium chloride: 5-8%, magnesium sulfate: 3-6%, carboxymethyl cellulose: 8-15%, essence: 0.7-1.0%, and then the selected silica gel , aluminum oxide, fer...

AI Technical Summary

Problems solved by technology

Silica gel desiccant is usually prepared by reacting sodium silicate and sulfuric acid, and undergoing a series of treatments such as aging and acid soaking. The raw materials are dangerous goods, and the process is relatively complicated.

[0004] There are also some acid and alkaline desiccants, which generally have relatively large water absorption capacity and relatively fast drying speed, but most of them cannot be recycled

[0005] Molecular sieve desiccant is also a kind of desiccant product that is artificially synthesized and has strong adsorption to water molecules. It is a crystalline aluminosilicate compound. There are regular and uniform pores in its crystal structure, and the pore diameter is on the order of molecular size. , but its preparation process is more complicated, and its use effect is also limited