At present, with the development of steel slag portland cement technology, the fine powder of steel slag processed by grinding equipment can be applied to concrete and cement as a new admixture, greatly improving the utilization rate of steel slag. However, it is proposed in the "Industrial Green Development Plan" that the utilization rate of steel slag will be increased to 95% by 2020, and now that it has passed half of it, coupled with the impact of the epidemic in the first half of the year, it is urgent to accelerate the comprehensive utilization of steel slag resources!
Construction of a steel slag micropowder production line is now a common method used by many cement plants and iron and steel plants to process steel slag. The deep-processed steel slag micropowder products are of good quality and have a wide range of applications, which can alleviate the problem of steel slag accumulation to a certain extent.
1. Steel slag produced by steelmaking in the iron and steel plant is filled with a slag tank at the slag discharge site, and the tilting device holds the slag tank tightly and moves the slag tank.
2. Pour the steel slag into the drum/hot stuffing tank, pretreat the steel slag through the drum/hot stuffing process to achieve slag-iron separation, and at the same time stimulate the stability and activity of the steel slag
3. After the pretreated steel slag passes through the vibrating feed sieve to remove large slag steel, it enters into the crushing magnetic separation system, and the steel slag is crushed and removed for iron purification by a rod mill
4. The metal iron content of the steel slag tailings after purification is less than 2%, and the fineness is less than 10mm, of which the metal material can be recovered and returned to the steel plant for sintering and steelmaking
The steel slag below 5.5mm enters the grinding system and is ground by GRMSS series steel slag vertical mill. It is new and environmentally friendly and highly efficient. The specific surface area of the produced steel slag powder is 400-500㎡/kg. It is widely used in cement and The concrete admixture realizes the high-value resource utilization of steel slag.
In the entire process, environmentally friendly production of slag is achieved.
Not only that, the iron content in the steel slag generally ranges from 1% to 3%. The iron separation process of chaeng steel slag vertical mill grinding system is optimized, and multi-channel iron separators are added to the feeding system, which greatly increases the amount of metal iron. , Improve the system's comprehensive economic and environmental protection benefits.
