Preparation method of low-agglomeration and anti-burst fibers for unshaped refractory materials

Abstract

The invention discloses a preparation method of low-agglomeration and anti-burst fibers for unshaped refractory materials, which belongs to the field of the refractory materials. The preparation method comprises the following steps: using waste paper (books, newspaper and paperboards and the like), waste hemp articles (hemp bags and hemp ropes and the like) as raw materials; adding a proper amount of an anti-agglomeration additive, placing into an efficient crusher to crush; and then adopting a screening technique to prepare the anti-burst fibers with different length-diameter ratios. The preparation method is simple process and convenient in operation; the obtained product is green and environment-friendly to the environment, the resource is recycled, and the cost performance is high; the internal vapor pressure inside the unshaped refractory materials can be effectively reduced so as to avoid burst; especially in quick-drying unshaped refractory materials with high strength, the anti-burst effect is more obvious.

Description

technical field [0001] The invention belongs to the field of refractory materials, in particular to a method for preparing low-agglomeration explosion-proof fibers used for unshaped refractory materials. Background technique [0002] At present, the output of unshaped refractory materials in developed countries accounts for 40-50% of the total output of refractory materials, such as Japan has reached 54%, and my country's output only accounts for 15-20% of the total output. Unshaped refractories have a wide range of applications, and have been widely used in iron and steel, non-ferrous metals, building materials, light industry and petrochemical industries, and will get greater development in the future. [0003] The use of fiber as an unshaped refractory material abroad, especially the explosion-proof agent for castables, was carried out earlier. Kleeb and Caprio investigated the addition of organic fibers to a slab-like high-alumina castable containing 15% CAC. The addit...

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Problems solved by technology

[0004] In the current new castables, due to the use of composite ultra-fine powder and high-efficiency admixtures, the casting lining is too dense, and it is difficult to discharge the bound water, which makes the lining prone to bursting during the heating process. It is urgent to develop a new type of explosion-proof agent.