Abstract
The article presents the results of physico-chemical research of waste from the phosphorus industry – phosphorus sludge and cottrell dust. The reliability of the experimental results was ensured by the use of generally recognized research methods, as well as reliable physico-chemical and instrumental methods of analysis. The results of the experiment prove the suitability of these types of waste for the production of mineral fertilizers. This, in turn, will make it possible to improve the environmental situation in the southern region of Kazakhstan.
Highlights
The development of the industry around the world has made the problem of complex processing of technogenic waste and attracting substandard mineral resources to production urgent
As a result of the reduction of electric smelting of phosphorite raw materials at the NovoDzhambul phosphorus plant alone, about 140–160 kg of cottrell dust is formed per 1 ton of production yellow phosphorus, which is discharged into evaporation basins in the form of a suspension - cottrell milk [4]
On the territory of the former phosphorus plant in Shymkent has accumulated more than 500 thousand tons of phosphorous sludge, which in its chemical and granulometric composition is characterized by complex inclusions of mineral components of the charge and processed products [5, 6]
Summary
The development of the industry around the world has made the problem of complex processing of technogenic waste and attracting substandard mineral resources to production urgent. Its production is due to the formation of large technogenic waste in the form of slag, ferrophosphorus, phosphorus sludge and cottrell dust. As a result of the reduction of electric smelting of phosphorite raw materials at the NovoDzhambul phosphorus plant alone, about 140–160 kg of cottrell dust is formed per 1 ton of production yellow phosphorus, which is discharged into evaporation basins in the form of a suspension - cottrell milk [4]. On the territory of the former phosphorus plant in Shymkent has accumulated more than 500 thousand tons of phosphorous sludge, which in its chemical and granulometric composition is characterized by complex inclusions of mineral components of the charge and processed products [5, 6]
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