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Introduction to room temperature thermal insulation refractories There are many specifications of thermal insulation refractory materials. We will briefly introduce them: 1.Vacuum insulation panel 1.1 Characteristics of vacuum insulation panels: (1) Convenient construction, light weight and cost saving (2) High temperature resistance, high pressure resistance and long service life (3) Good high temperature insulation performance …

Commonly used heat insulation refractory materials and performance and working principle introduction Read More »

1.Bulk density Bulk density of refractory material is the mass per unit volume, which is usually used to describe the density and weight characteristics of the material. Bulk density is one of the important physical and chemical indexes of refractory bricks, which can directly affect the compactness of refractory bricks, as well as thermal insulation …

Describe several technical requirements for refractory materials Read More »

Short process steelmaking in electric furnaces is a new process for steel production with scrap as the main raw material. The electric furnace consists of furnace body and furnace cover, the shell of the furnace body is made of steel plate, and the inner lining is made of refractory material. The outer ring of the …

Causes of refractory damage in various parts of the electric furnace Read More »

High alumina refractory bricks play an extremely important role in industrial furnaces due to their excellent high temperature resistance. According to different classification standards, high alumina refractory bricks can be subdivided into multiple types to meet various specific application requirements. The following are the main classification methods of high alumina refractory bricks: Classification according to …

How to classify refractory high alumina bricks Read More »

Refractory castables are a type of unshaped refractory materials. They are a mixture of refractory aggregates, binders and admixtures, which can be used as mud after adding water (or liquid binder) and mixing. Refractory castables have a certain coagulation and hardening time after construction. Therefore, after casting and forming, they need to be cured for …

How to add water to refractory castables during construction Read More »

(1) The working conditions of the mud in the joints of refractory masonry bricks are exactly the same as those of refractory bricks. Therefore, the main technical indicators of the two, refractoriness and chemical composition, should also be the same or compatible.(2) The type and brand of mud should be selected by the designer according …

Requirements for refractory mortar in refractory brick masonry Read More »

The ladle slag line is the part where the molten steel is in direct contact with the air. At present, most of the ladle slag line masonry uses magnesia carbon bricks. Due to the temperature difference and the existence of oxygen-rich environment, the erosion rate of this part is significantly faster than other parts. In …

Factors affecting the life of refractory bricks in ladle slag line Read More »

Production process of refractory bricks The production of refractory bricks goes through multiple production processes and procedures. Each Zhengyuan refractory brick undergoes strict quality control. Today, the editor will introduce to you how refractory bricks are made. Refractory brick production process introduction: raw material selection, high temperature calcination, sorting and grading, crushing and grinding, scientific …

How to make refractory bricks and special shaped refractory bricks Read More »

1.Furnace bottom There are three structural forms: full ceramic, full carbon brick and integrated furnace bottom. In the past, when designing the furnace bottom, heat dissipation and cooling conditions were not taken seriously, which was a typical corrosion-inhibiting full ceramic design. At present, this form is only suitable for the furnace bottom structure of small …

Selection and laying methods of refractory bricks in various parts of blast furnace Read More »

Currently common methods to reduce the high temperature erosion of magnesium carbon bricks are the following three points: 1.Select high-quality materials with stable compositions to improve the erosion resistance, thermal shock resistance and structural spalling resistance of the materials Selection of high-purity and high-quality electrofused magnesia, which has the advantages of large grain size, high …

Three common methods to reduce high temperature erosion of magnesium carbon bricks Read More »