Method for preparing cement mixture from waste phosphorus dregs through wet-milling method

Abstract

The invention relates to a method for preparing a cement mixture from waste phosphorus dregs through a wet-milling method. The method comprises the steps of crushing the waste phosphorus dregs, salic industrial wastes and industrial by-product gypsums with an excitation function in a crushing machine to 2 to 20mm, and powder milling in a ball mill through a wet method; feeding 0.5 to 0.6 percent of water and doping 0.1 to 0.2 percent of water reducing agent into a mixing tank, stirring through an electric stirrer, then adding 40 to 65 parts of phosphorus slags and 32 to 50 parts of salic industrial wastes for stirring, finally adding the industrial by-product gypsums with the excitation function for continuously stirring, and obtaining a liquid slurry; and pumping into the vertical ball mill, wet-milling to below 10 mum, and preparing the slurry cement mixture. According to the method for preparing the cement mixture from the waste phosphorus dregs through the wet-milling method provided by the invention, the phosphorus dregs, the salic materials and the industrial wastes are adopted as raw materials, and the water reducing agent is added for wet-milling, so that the materials are activated without doping an exciting agent; and the method is simple in operation process, has no need to dry solid wastes, and is energy-saving and environmental-friendly, and good in economic efficiency.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for preparing cement admixture by the wet grinding method of waste phosphorus slag. Background technique [0002] In industrial production, when using an electric furnace to produce yellow phosphorus, the molten material mainly composed of calcium silicate is discharged, and the product after quenching is granulated electric furnace phosphorus slag (referred to as phosphorus slag). .Phosphorus slag is mainly in glass state, the glass body content is more than 85%, the chemical composition is similar to slag, mainly CaO and SiO 2 Mainly, but Al 2 o 3 Low content, with a certain potential hydraulic hardness. However, due to the P in phosphorus slag 2 o 5 Due to the influence of harmful components such as phosphorus slag, the setting speed of phosphorus slag Portland cement is too slow, and the early strength is low, which seriously restricts the...

AI Technical Summary

Problems solved by technology

This method is simple in principle and has been widely promoted, but there are also the following problems: the above-mentioned part of industrial solid waste adopts a wet discharge method and open-air stacking, which leads to a large amount of water in the waste, and the traditional grinding process It must be dried to increase energy consumption

[0006] When wet-grinding silicon-aluminum materials and industrial waste, such as slag, the inner wall of the wet-grinding equipment is easy to agglomerate due to its good hydration activity, which can block pipes and damage equipment

Moreover, the prepared slurry admixture should not be placed for too long, because the slag will harden after a long time

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