The application of nano-carbon materials in refractories-summary and prospects--PUDA packing machine for nano-carbon materials

The application of nano-carbon materials in refractories-summary and prospects

The application of nano-carbon materials in refractory materials can solve many problems of thermal shock stability and erosion resistance caused by low carbon to a certain extent. However, due to the high market price of nano-carbon materials, the introduction of refractory materials The cost of nano-carbon materials is relatively high. Therefore, the introduction method of in-situ generation of nano-carbon materials has the characteristics of low cost, good dispersibility, and strong operability compared with the direct introduction of nano-carbon materials. It will be introduced into refractory materials in the future. The mainstream way of materials.

The shortcomings of the above research are mainly divided into the following points:

①The catalysts used at this stage are generally transition metals such as iron, cobalt and nickel, which lack the development of some new catalysts and solve the deficiencies of today's traditional catalysts;

②The introduction of nano-carbon materials, the temperature range of the main research at this stage is 800~1400℃, and there is a lack of research on low and higher temperatures;

③The commonly used catalysts at this stage have not done targeted research on the in-situ growth mechanism of different carbon sources and the in-situ growth mechanism of different catalysts of the same carbon source, and cannot achieve the controllability of the shape and length of nano-carbon materials;

④ At this stage, most of the researches focus on carbon-based refractories, and there are few researches on refractories that use binders as carbon sources to generate nano-carbon materials in situ.

Based on the above research results, nano-carbon materials are introduced into refractory materials to toughen refractory materials and achieve the purpose of improving the mechanical properties and service life of refractory materials. However, the research of nanostructures on other properties of refractory materials has not yet been involved, and the following can be around Aspects expand:

1) To study the influence of the introduction of nano-carbon materials on the high-temperature compression performance, high-temperature flexural performance, load softening temperature, creep resistance and other properties of refractory products, which has far-reaching significance for the actual use of refractory products.

2) The carbon-containing binder can be modified. Under the premise of not affecting its binding ability, a certain catalyst can be added to make it self-catalyze to generate nano-carbon materials during the sintering or use of refractory materials to solve the problem of nano The uneven dispersion of the catalyst in the refractory products leads to the problem that the local uneven distribution of the nano-carbon materials causes the performance of the refractory to decrease.

3) The temperature for in-situ generation of carbon nanomaterials is generally above 800°C. The research on the in-situ growth of carbon nanomaterials from non-fired refractory materials is not involved. If the carbon nanomaterials can be grown in-situ during the drying process of non-fired refractory products , It can greatly improve the application of nano-carbon materials in refractory materials.

4) The development of the metallurgical industry will inevitably increase the requirements for refractory materials. In the above research, when the temperature exceeds 1400 ℃, the carbon nano materials introduced by the direct addition method or the in-situ growth method will be damaged to a certain extent, so the carbon nano materials Certain modifications to enhance the refractory temperature of nano-carbon materials will increase the application of nano-carbon materials in refractory materials.

5) Further in-depth study of the interaction mechanism between nano-carbon materials and refractory grains can be analyzed by simulation calculations such as molecular dynamics and finite element analysis. Provide theoretical guidance for the optimization of refractory preparation process.

6) Conduct research and analysis on nano-carbon materials in refractories treated at temperatures of 1600°C and above, study the mechanism and degree of damage, and at the same time explore the effect of the evolution of nano-carbon materials at high temperatures on the properties of refractories and explore its Mechanism, or the impact of the products (such as microcracks) left after the damage of nano-carbon materials on the properties of refractories.

PUDA Packing machines for  nano-carbon materials

DCS-CJL Series: Screw Feeding Packing Machine for Open Mouth Bag

Working Principle:

Material is fed by horizontal screw feeder, and material will enter into weighing system uniformly through screw feeder from silo. The screw feeder starts to run after turning on packing machine, and then material will be filled into bag or weighing hopper. When weight reaches the preset value, the screw feeder will stop running. Operator takes filled bag away, or put it on belt conveyor to sewing machine. The packing process finishes. 

Specification and Model: