Manufacturing method of copper-based slag notch sleeve inner core suitable for smelting reduction furnace

Abstract

The invention discloses a manufacturing method of a slag notch sleeve inner core suitable for a smelting reduction furnace. The manufacturing method comprises the following process steps that C powder and Ti powder are uniformly mixed according to a ratio of (1-2): (1-2), the mixture of the C powder and the Ti powder is further ground in a mill, and uniformly mixing is carried out for the second time; the C powder and the Ti powder which are evenly mixed and ground for the second time are bonded together through a binding agent for standby application; the prepared C powder and Ti powder stickies are smeared on the surface of a mold of the smelting reduction furnace slag notch sleeve inner core after preheating is stopped, and pure copper starts to be heated to be melted; the heated copper liquid is poured into an empty bag between the mold and the bonding layer of the C powder and the Ti powder within 30 seconds; and cooling is carried out. The obtained copper-based slag notch sleeve inner core is good in heat conduction effect and capable of meeting the complex working environment in the smelting reduction smelting process, the wear resistance is greatly improved, and the thermal deformation resistance is improved.

Description

technical field [0001] The embodiments of the present disclosure generally relate to the technical field of iron and steel metallurgy machinery, belong to the technical field of metal composite material preparation, and relate to a method for manufacturing a copper-based slag core, and more specifically, a copper-based slag core suitable for smelting reduction furnaces. The method of making the inner core. Background technique [0002] The smelting reduction method is a method of producing molten iron without the blast furnace method. It uses non-coking coal as the main energy source, directly uses iron ore powder and other raw materials, and uses carbon to reduce iron oxides into metallic iron in a high-temperature molten state. Compared with blast furnace technology, smelting reduced iron technology has significant advantages in resource applicability, pollutant discharge, process saving, high value-added products, etc. It is an important direction for the development of n...

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Problems solved by technology

However, since the inner core of the slag mouth sleeve commonly used in the smelting reduction furnace slag mouth device is mainly steel inner core, the problems of short life such as easy burning, easy deformation, and poor high temperature resistance during actual use have become increasingly prominent. or indirectly caused major economic losses to the relevant production enterprises

[0003] Pure copper has good ductility, thermal conductivity and excellent alloy mechanical properties. In addition, copper is also a durable metal that can be recycled many times without damaging its mechanical properties. However, the melting point of pure copper is around 100 ° C, and its high temperature resistance is poor.

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