A kind of ferric agent for ladle iron and its preparation method and application

Abstract

The invention discloses a molten iron jar melting agent and a preparation method and application of the molten iron jar melting agent. The molten iron jar melting agent is composed of, by weight, 0 to 100% of jet coal, 0 to 100% of anthracite, 0 to 100% of industrial salt and 0 to 100% of aluminum powder, wherein the sum of the weight percents of the components is 100%. The preparation method specifically includes the steps of A pretreatment and B preparation, wherein in the pretreatment process, materials are prepared according to a formula of the molten iron jar melting agent, the anthracite and the jet coal are smashed for use, and the industrial salt and the aluminum powder are purchased for use; in the preparation process, the smashed anthracite, the smashed jet coal, the industrial salt and the aluminum powder are weighed according to the proportion of the formula and then mixed and stirred evenly, so that a target object is obtained. The molten iron jar melting agent is placed in a molten iron jar before iron is placed in a blast furnace and 200 kg to 500 kg of the molten iron jar melting agent is added each time. The anthracite, the jet coal, the industrial salt and the aluminum powder are reasonably combined, so that the polymer effect is generated, the effect that one plus one is larger than two is achieved, an intense combustion reaction is generated after the agent is added to the surface of molten iron, and the reaction is complete.

Description

technical field [0001] The invention belongs to the technical field of energy saving, and in particular relates to a ferricizer for molten iron tanks, a preparation method and application thereof. Background technique [0002] During the use of molten iron tanks, the waiting time for transportation is too long and the temperature drops, which will cause iron sticking in the tank. If there is less sticky iron, part of it can be melted in the later use process. As the number of uses increases, the sticky iron in the tank There are also more and more, and finally 30~40 tons of large lumps of iron are formed, which leads to the death of the iron tank. The large lump of iron is knocked out by the overturning method, but a large amount of refractory material in the tank also falls off, and the parts that do not fall off are also cracked and loose. , can no longer be used, only to be demolished and re-built. In recent years, due to the use of some vanadium-titanium ore, the stickin...

AI Technical Summary

Problems solved by technology

[0002] During the use of molten iron tanks, the waiting time for transportation is too long and the temperature drops, which will cause iron sticking in the tank. If there is less sticky iron, part of it can be melted in the later use process. As the number of uses increases, the sticky iron in the tank There are also more and more, and finally 30~40 tons of large lumps of iron are formed, which leads to the death of the iron tank. The large lump of iron is knocked out by the overturning method, but a large amount of refractory material in the tank also falls off, and the parts that do not fall off are also cracked and loose. , can no longer be used, only to be demolished and re-built. In recent years, due to the use of some vanadium-titanium ore, the sticking situation has become more serious. The service life of the ladle is only 200~300 times. A lot of refractory materials and manpower are wasted due to the short service life of the ladle. One of the factors affecting the cost of pig iron is that in recent years some iron smelting plants have adopted the technical means of putting iron chemical into the iron tank to prolong the life of the iron tank, but the core technology of iron chemical is in the hands of private or private enterprise owners. Iron agent can produce a certain effect of dissolving dead iron, but due to the high cost of adding iron agent (5600~6200 yuan / ton), a large part of the profits generated by ironworks are obtained by private enterprises, state-owned The production cost of the enterprise is high and the situation of loss