Method for preparing porous material with solid waste as raw material

Abstract

The invention provides a method for preparing a porous material with solid waste as a raw material. The method comprises the steps: one, preparing a corn husk powder and a glycosylated sludge powder; two, mixing evenly coal-based industrial waste and the glycosylated sludge powder, to obtain a mixed powder; three, mixing evenly deionized water, the corn husk powder and the mixed powder, to obtain a blank material; four, placing the blank material in a constant temperature oven, and carrying out staling treatment and pressing molding, to obtain a molded blank material; and five, carrying out drying treatment and roasting treatment on the molded blank material, and naturally cooling to obtain the porous material. According to the method, the porous material is prepared with the coal-based industrial waste as a support material, glycosylated sludge as a bonding material and corn husks as a pore forming material and through mixing, staling, pressing, roasting and a series of technological processes; and the porous material comprises mostly blocks with medium pores and large pores, and can be used for adsorbing materials, catalysts and carriers in flue gas desulfurization and denitrification treatment processes, environmental-protection sound absorption materials, lightweight ceramics and other many fields.

Description

technical field [0001] The invention belongs to the technical field of porous material preparation, and in particular relates to a method for preparing porous material by using solid waste as a raw material. Background technique [0002] Porous materials are a class of materials that contain a large number of pores. The so-called porous material must have the following two elements: one is that the porous material contains a large number of pores; the other is that the contained pores can meet one or more design requirements to achieve the expected performance indicators. Porous materials are widely used, and can be used as filter materials in many industries such as sewage treatment, food and beverage processing, medical and health care, and environmental protection; as building materials, they can take advantage of their light weight, thermal insulation, sound insulation, and convenient transportation and use. It can replace traditional building materials; it can be used ...

AI Technical Summary

Problems solved by technology

However, at present, corn husks are mostly used in boiler fuel, animal feed, hand weaving, etc., with a narrow application range and low technological content, resulting in a serious waste of resources

[0005] In the production process of the traditional corn sugar production process, the corn milk produced after the corn is crushed passes through the buffer tank and then enters the liquefaction reactor. The liquefied syrup produced after liquefaction is cooled and sent to the saccharification tank for saccharification. After filtering to remove protein, fat and other insoluble matter, enter the evaporator for concentration, and finally prepare glucose solution. Usually, diatomaceous earth is added as a filter medium in the process of filtering saccharification solution to better achieve filtration. Therefore, the filter residue It contains protein, fat, other insoluble matter and diatomite. Although the filter residue is not directly harmful to humans and animals, if it is directly discharged into the water body, it will consume a large amount of dissolved oxygen in the water, destroying the ecology of the water body, and endangering agriculture, fishery and human health. Normal life

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