Granular neutral cement grinding aid and its prepn process

Abstract

The present invention discloses one kind of granular neutral cement grinding aid and its preparation process. The grinding aid is produced with anhydrous sodium sulfate 40-50 wt%, gypsum dehydrate 10-20 wt%, elite calx 25-45 wt% and triehtanolamine 1-5 wt%. The grinding aid can activate the effective components in cement to raise the strength of cement, save cement clinker and reduce pollutant gas exhaust. The granular grinding aid has less stickness to bin.

Description

Technical field

[0001] The invention relates to a granular cement grinding aid and a corresponding preparation process. Background technique

[0002] In the process of manufacturing cement, when the cement clinker, additional materials and gypsum mixture are added to the mill, during the grinding process, due to the violent, frequent and complex friction and impact between the materials and between the materials and the grinding body , Make the material generate static electricity, the charged material will be adsorbed on the surface of the steel ball and grinding body, causing serious balling and forging phenomenon in the cement mill; when the humidity of the added additional material is higher than 5%, it will A large amount of water vapor is generated in the mill, which increases the humidity of the grinding material, and also causes the above-mentioned balling and forging phenomenon, which greatly reduces the output and quality of cement.

[0003] In order to solve the proble...