Hot rolled strip steel head production line and production process thereof

Abstract

The invention relates to a hot rolled strip steel head production line and a production process thereof and belongs to the technical field of steel slag treatment equipment of the metallurgical industry. According to the technical scheme, the hot rolled strip steel head production line comprises a purifying machine, a sorting machine, a preheating furnace and a molding rolling mill. The purifyingmachine, the sorting machine, the preheating furnace and the molding rolling mill are arranged in the conveying direction of raw materials in sequence. Material conveyor belts are arranged between thepurifying machine and the sorting machine, between the sorting machine and the preheating furnace and between the preheating furnace and the molding rolling mill correspondingly. The hot rolled stripsteel head production line has the beneficial effects that the purifying machine is good in hammering effect, can completely separate slag and iron, ensure that the iron grade reaches up to 95% and more, meet the use requirements of iron and steel enterprises for smelting and facilitate replacement of ring hammers and overhaul operation; the preheating furnace is good in turnover effect and uniform in material heating, and noise of equipment due to vibration can be reduced; and the hot rolled strip steel head production line can roll different shapes and sizes of slag iron can into sheets, cut the sheets into strip-shaped articles used for smelting of hot rolled strip steel heads, and the yield is high.

Description

technical field [0001] The invention relates to a hot-rolled strip steel head production line and a production process thereof, belonging to the technical field of steel slag processing equipment in the metallurgical industry. Background technique [0002] Hot-rolled strip steel head is made of steel slag as raw material through purification, screening, heating and rolling, and is mainly used for steelmaking in iron and steel enterprises. At present, the hot-rolled strip head production line mainly has problems such as large floor area, environmental pollution, poor separation effect of slag and iron, low yield rate, and high production cost, which are mainly manifested in the following aspects: [0003] 1. Purification of steel slag [0004] Steel slag is a kind of slag iron solid waste mixed with iron, cement, soil, sundries, etc. Under normal circumstances, steel mills will sort out larger iron ingots with irregular sizes above 700mm-800mm, physically beat and cut them,...

AI Technical Summary

Problems solved by technology

The hot slag pool is a simple separation process based on the principle of thermal expansion. Due to the complex and diverse shapes and internal structures of steel slag, it is very difficult to separate slag and iron, and it is even more difficult to separate iron-clad slag. Therefore, through this The iron grade after processing in the stewed slag pool is less than 80%, which cannot meet the smelting requirements of iron and steel enterprises

[0007] 2. Adopt dry grinding, semi-grinding, vertical milling, water milling, rolling and other processing methods, but most of them choose dry grinding treatment. After hammering and grinding, the iron grade is between 72-80, and then water milling treatment, after washing 1. The iron grade after grinding is between 80-90. These processing techniques can separate slag and iron, but they cannot meet the ideal requirements for smelting in iron and steel enterprises.

The existing purifier has the following disadvantages: first, the swing angle of the hammer is small, the impact force on steel slag is small, the separation effect of slag and iron is poor, and the iron grade after separation is low; When it is used, it is often stuck in the working chamber of the equipment and damages the equipment parts; the third is that the replacement of the impact hammer and the maintenance of the purifier are inconvenient, time-consuming and labor-intensive.

However, the slag iron forms flakes with different sizes after rolling, so the ordinary cutting machine cannot complete the continuous cutting operation.

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