Preparation method of large-size metal-skin refractory bricks and movable mold of large-size metal-skin refractory bricks

Abstract

The invention discloses a preparation method of large-size metal-skin refractory bricks and a mold of the large-size metal-skin refractory bricks, and belongs to the technical field of refractory materials. The mold comprises a mold sleeve, mold base plates, a mold bottom plate, a mold false bottom, a mold bottom supporting plate, mold movable side plates, mold side plates, mold end plates and a mold cover plate. According to the method, the refractory bricks are designed to be stressed up and down, so that the pressing stress uniformity is improved, sufficient pressure is guaranteed, and cracking is avoided; the metal skin wrapping firmness is improved by designing a metal skin special-shaped claw; metal skin is protected through a special mold; the mold movable side plates and the metal skin achieve synchronous movement, so that metal skin deformation or friction scratches are avoided; and meanwhile, a grinding tool is protected, and the service life of the grinding tool is prolonged, so that the preparation qualification rate and production efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a method for preparing refractory bricks and a mold thereof. Background technique [0002] Refractory materials are generally divided into two types, namely unshaped refractory materials and shaped refractory materials. Unshaped refractories are mixed powdery particles composed of various aggregates or aggregates and binders, and have strong fluidity. Shaped refractory materials generally refer to refractory bricks, whose shape has standard specifications, and can also be temporarily processed when building and cutting according to needs. [0003] Refractory bricks are also called refractory bricks. According to the preparation process, they can be divided into fired bricks, unfired bricks, fused bricks (fused cast bricks), and refractory insulation bricks; according to their shape and size, they can be divided into standard bricks and ordinary bricks. ...

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Problems solved by technology

[0005] (1) The refractory brick filling is unevenly stressed, insufficient pressure leads to cracking or short service life, metal skin deformation, metal skin coating is not firm, scratches on the metal skin affect the refractory performance, resulting in short service life, and severe mold wear leads to mold wear Problems such as short service life; resulting in extremely low production pass rate and high manufacturing cost

According to statistics, in the production of large-size metal-skinned refractory bricks, there are a lot of appearance waste products, physical inspection waste products and size waste products, and the comprehensive pass rate of products is only 10%. The production time of a single large-size refractory brick is 3 times that of small-size refractory bricks. , the cost of raw materials increased by 800% to 900%;

[0006] (2) It is relatively easy to produce single-sided or upper and lower metal-skinned refractory bricks, but it is more difficult to produce L-shaped or multi-sided metal-skinned bricks. Considering the pass rate factor, the total production time needs to be increased by 30 times, which greatly affects the production rhythm and Productivity

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