Steel slag crushing system and steel slag crushing method

Abstract

The invention discloses a steel slag crushing system, which comprises a condensing steam turbine, a material bin, a screw feeder, a steam kinetic energy mill, a classifier, a cyclone separator and a finished product ash warehouse, wherein the material bin, the screw feeder, the steam kinetic energy mill, the classifier, the cyclone separator and the finished product ash warehouse are sequentiallyconnected, and the steam inlet of the steam kinetic energy mill is connected to the steam outlet of the condensing steam turbine. The invention further discloses a method for crushing steel slag by using the steel slag crushing system. With the method and the system of the present invention, the crushing efficiency can be improved, and the cost can be reduced.

Description

technical field [0001] The invention relates to the field of steel slag crushing, in particular to a steel slag crushing system and method. Background technique [0002] At present, the use of steel slag powder is more and more extensive. It can be used as a mineral admixture for cement or concrete, and can also be used as a filler for coatings, glass fiber reinforced plastics, artificial marble, paper and fertilizers. However, steel slag is difficult to break and grind. The crushing efficiency is low and the cost is high. Traditional steel slag micronization processing technologies mainly include mechanical milling and jet milling. The former has the disadvantages of pre-drying, equipment wear and high energy consumption; the latter has the disadvantages of pre-drying, low production capacity and high energy consumption. . [0003] At the same time, the free calcium oxide content in the steel slag is too high, which affects the stability of the steel slag powder; in addit...

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Problems solved by technology

[0002] At present, the use of steel slag powder is more and more extensive. It can be used as a mineral admixture for cement or concrete, and can also be used as a filler for coatings, glass fiber reinforced plastics, artificial marble, paper and fertilizers. However, steel slag is difficult to break and grind. Low crushing efficiency and high cost

Traditional steel slag micronization processing technologies mainly include mechanical milling and jet milling. The former has the disadvantages of pre-drying, equipment wear and high energy consumption; the latter has the disadvantages of pre-drying, low production capacity and high energy consumption.

[0003] At the same time, the free calcium oxide content in steel slag is too high, which affects the stability of steel slag powder; in addition, steel slag also contains metallic iron, which is of great value if it can be further recycled

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