The Utilization of Blast Furnace Slag
In the process of pig-iron making in the Blast Furnace, converter and other converters, a large amount of Blast Furnace Slag is generated. As an important resource of industrial solid waste, it has been paid more attention as an important resource of innovative and efficient utilization in recent years. This article aims to brief the utilization of Blast Furnace Slag with the perspective of resource recycling.
Blast Furnace Slag is a kind of part of the hot stony slag produced in the process of pig-iron making by the blast furnace, the converter and other converters. It mainly consists of ferritic quartz, anorthite, calcite and clinochlore. It has good hydraulic activity and its calcium-silicon components can reach more than 18%.Slag has the characteristics of high silicon and low calcium. Moisture content is also an important parameter affecting the properties of Blast Furnace Slag.
Blast Furnace Slag can be used in a variety of ways. In cement production, Blast Furnace Slag can be used as raw material for clinker making and cement grinding. When granulated Blast Furnace Slag is used for the manufacture of cement, the chemical composition of Blast Furnace Slag will affect the properties and performance of cement. Blast Furnace Slag can also be used as concrete admixtures, which can improve the compressive strength of concrete and reduce the amount of cement. In addition, it can also be utilized as a roadbed material and an additive for mineral processing industry.
Besides being used as raw material, Blast Furnace Slag is also an important building material. Concrete and cement composite materials can be further developed into floors, road surfaces, roads and bridges. At the same time, Blast Furnace Slag can also be directly used as building material or additives, such as stone asphalt road surface and ordinary road surface materials. The application of Blast Furnace Slag in construction engineering can not only save the cost of construction, but also reduce the pollution and environmental damage caused by the use of ordinary materials.
Apart from the above mentioned uses, Blast Furnace Slag can also be used as raw material for the manufacture of glass and as raw material for paper making and agrichemical production. Due to the low melting point and large viscosity, it is suitable for the manufacture of stone and glassware.
In the process of utilization of blast furnace slag, there are still some technical problems which need to be solved. For example, the particle size of Blast Furnace Slag for cement making is required to be controlled. How to effectively and efficiently realize the comprehensive recovery and comprehensive utilization of Blast Furnace Slag is also an important issue to be considered.
In conclusion, the utilization of Blast Furnace Slag has great potential. With the deepening of economic development, comprehensive utilization of resources and the improvement of technological level, the application of Blast Furnace Slag in various fields will be more extensive and efficient.
