Preparation method for low-carbon production of refined corundum mullite high-temperature material

Abstract

The invention relates to a preparation method for low-carbon production of a refined corundum mullite high-temperature material in the field of high-temperature refractory materials. The preparation method comprises the following steps: step 1, grading a bauxite raw material; step 2, burdening; step 3, dry fine grinding; step 4, carrying out partial wet-process fine grinding; step 5, mixing and blending in proportion; step 6, mechanical pressing molding; and step 7, firing a finished product. The process has the characteristics that dry fine grinding is mainly adopted, a large amount of water is prevented from being brought in, and low production cost in the process is ensured; and wet fine grinding slurry is used as an auxiliary material and a binding agent, and meanwhile, less than 6% of water is brought into the slurry to wet the dry material, so that the forming performance is ensured. Meanwhile, the components are more uniform through wet fine grinding, so that the uniformity of the components of the finished product can be better ensured when the components are added as a product matrix. Besides, for products with different purposes and different requirements on uniformity, the process of mixing the dry and wet materials can be finished by adjusting according to different proportions directly in the process of mixing the dry and wet materials; and the process adjustment is more flexible.

Description

technical field [0001] The invention relates to the field of high-temperature refractory materials, in particular to a preparation method for producing refined corundum-mullite high-temperature materials with low carbon. Background technique [0002] Corundum mullite refers to an inorganic non-metallic material with high corrosion resistance and excellent high temperature performance, with an alumina content between 77-94%, corundum phase as the main crystal phase, and mullite phase as the secondary crystal phase. [0003] At present, in terms of high-temperature refractory materials, natural bauxite has accumulated a large amount of broken ore and low-grade ore after years of mining and application, which not only results in low resource utilization, but also occupies a large amount of land resources. [0004] At present, there are mainly two methods in the utilization of low-grade ore and crushed ore, namely "dry process" and "wet process". The dry process is relatively lo...

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Problems solved by technology

[0003] At present, in terms of high-temperature refractory materials, natural bauxite has accumulated a large amount of crushed ore and low-grade ore after years of mining and application, which not only results in low resource utilization, but also occupies a large amount of land resources.

[0004] At present, there are mainly two methods in the utilization of low-grade ore and crushed ore, namely "dry process" and "wet process". The dry process is relatively low in drying costs, but the material uniformity is poor , the microstructure is uneven, which affects the product quality; although the wet process has good material uniformity, the dehydration process and drying process are cumbersome and the energy cost is high

[0005] The above two processes are difficult to take into account in terms of product quality and cost, especially in the context of the current mainstream "dual carbon" energy consumption is becoming more and more stringent, so it is difficult to widely promote in market applications

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