Phosphorus slag-based concrete and preparation equipment thereof

Abstract

The invention discloses phosphorus slag-based concrete and preparation equipment thereof. The phosphorus slag-based concrete is prepared from the following materials in percentage by mass: 20 to 40 percent of modified phosphorus slag powder, 10 to 20 percent of pulverized fuel ash, 20 to 40 percent of cement, 5 to 15 percent of ardealite, 1 to 3 percent of an additive and the balance of slag sand,wherein the additive is prepared from one or several of sodium aluminate, sodium sulfate and sodium silicate. The phosphorus slag-based concrete disclosed by the invention has the following advantages that the phosphorus slag powder and the pulverized fuel ash contain a large amount of glass bodies and have higher pozzolanic activity, and the activity of the pulverized fuel ash is higher than that of the phosphorus slag powder; the density of the phosphorus slag powder, the pulverized fuel ash and the ardealite is smaller than that of the cement, and mixing of the phosphorus slag powder, thepulverized fuel ash and the ardealite is beneficial for lightening of concrete; the water demand of the phosphorus slag powder, the pulverized fuel ash and the ardealite is lower than that of the cement when the fluidity degrees are the same, and the using amount of water can be reduced under the situation that the flowing property is unchanged; granules are different in distribution, most of thegranules is in normal distribution, and the granules in different levels are beneficial for increasing the compactness of the concrete.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to phosphorus slag-based concrete and preparation equipment thereof. Background technique [0002] Phosphorus slag is an industrial by-product discharged after producing yellow phosphorus from phosphate rock. It belongs to Class II solid waste in "General Industrial Solid Waste", and its main content is calcium oxide, silicon oxide, phosphorus pentoxide, aluminum oxide, and iron oxide. , fluorine, etc. With the continuous increase of yellow phosphorus consumption in our country, more and more phosphorus slags are brought, and now phosphorus slags are mainly stacked in the open air, which brings more and more serious environmental pollution problems. Phosphorus and fluorine plasma contained in phosphorus slag gradually dissolve and penetrate into the ground after being soaked in rainwater, thereby polluting groundwater or entering surface water to pollute water quality, affecting p...

AI Technical Summary

Problems solved by technology

With the continuous increase of yellow phosphorus consumption in our country, more and more phosphorus slags are brought, and now phosphorus slags are mainly piled up in the open air, and the environmental pollution problems are becoming more and more serious

Phosphorus and fluorine plasma contained in phosphorus slag gradually dissolve and penetrate into the ground after being soaked in rainwater, thereby polluting groundwater or entering surface water to pollute water quality, affecting plant growth, and entering the human body through the food chain, causing the human body to be prone to dental fluorosis and bone fluorosis due to excessive fluorine disease and other diseases, so it can endanger human health on a large scale and bring serious hidden dangers of secondary pollution

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