Preparation method of concrete water reducer

Abstract

The invention relates to a preparation method of a concrete water reducer. The preparation method comprises the following steps: (a) neutralizing sulfite waste liquid with an alkaline solution; (b) after neutralization, adding microorganisms for fermentation to remove carbohydrates; and (c) evaporating and drying the solution to obtain the powdery water reducer. According to the preparation method of the concrete water reducer, the invention further relates to a preparation device of the water reducer, the preparation device comprises a liquid mixing box, and the liquid mixing box is provided with a PH value neutralizing part. The PH value neutralizing part adjusts the PH value in the liquid mixing box through sliding. The PH value neutralizing part vertically slides to adjust the PH value in the liquid mixing box. The preparation device of the water reducer further comprises rubber barrels, inverted boxes and vertical holes, the rubber barrels are arranged on the left side and the right side of the liquid mixing box respectively, each rubber barrel is vertically and slidably connected with the corresponding inverted box, and the two vertical holes are formed in each inverted box. The preparation device of the water reducer further comprises a cylinder and a pressing screw, the cylinder is arranged on the pressing screw, the cylinder is slidably connected to a round pipe, and the cylinder is in threaded connection with the pressing screw.

Description

technical field [0001] The invention relates to the field of water reducer preparation, more specifically to a preparation method of concrete water reducer. Background technique [0002] Water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of concrete basically unchanged. Most of them are anionic surfactants, such as lignosulfonate, naphthalenesulfonate formaldehyde polymer, etc. After being added to the concrete mixture, it can disperse the cement particles, improve its workability, reduce the unit water consumption, improve the fluidity of the concrete mixture; or reduce the unit cement consumption and save cement. The application number is CN202011001939.1, which discloses a preparation method of concrete water reducer. The invention relates to a preparation method of concrete water reducer. It uses a concrete water reducer preparation equipment. The concrete water reducer preparation equipment includes a base With...

AI Technical Summary

Problems solved by technology

The present invention can solve the following problems existing in the current screening process of the concrete water reducer after preparation and molding: when the existing water reducer screening device sieves the pulverized water reducer powder, the screening action used Single, just a simple reciprocating sieving process, and it is difficult for the powder to move with the sieving device like larger particles, so that the powder is easy to accumulate on the sieving screen and cause mesh blockage. The separation is not thorough enough, and the screening efficiency is low

However, this patent cannot neutralize the sulfite waste liquid with an alkaline solution to prepare a water reducer

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