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What are the protection measures of Refractory Materials?

Le 18 novembre 2016, 10:40 dans Humeurs 0

After buying refractory materials, need to take protective measures

Brick for the factory timely, prevent the refractory material be affected with damp or the storage time is too long. Brick process, by drop horn, lack of edge, surface cracks, brick shape is not the whole of the brick, firmly don't apply, and control over the quality of masonry, eventually to examine the masonry work. In order to ensure the quality of masonry.

In the normal production, to maintain the kiln brick, in fact is the maintenance of kiln, adhere to the working condition of safe, maintain good kiln, demand maintenance measures, summed up the following:

1. To strengthen the maintenance of mechanical and electrical equipment, strengthen post personnel, workshop technical personnel's inspection, found the problem timely to adjust processing, to ensure the integrity rate of the equipment and operation efficiency.

2. 2. To strengthen the technical operation, optimized operation parameters, stable thermal principle, working condition of safe system, reduce volatility, prevent the system from open and stop again and again.

3. Complete the system air leakage sealing, safe feeding into the kiln raw meal feed rate.

4. Choose low temperature calcination technology, control the differentiation of furnace outlet temperature is 870 ~ 880 , the outlet exhaust gas temperature control in 300 ~ 330 .

5. Safe ingredients plan, control the raw ingredients.

 

6. Control suitable pulverized coal fineness and moisture.

The Development Trend of Refractory Materials Industry

Le 17 novembre 2016, 10:26 dans Humeurs 0

In recent years, the world refractory material industry has happened great changes. On the one hand, because of the industrial technology progress, process and equipment changes (such as electric furnace steelmaking increase) and refractory material own improvement, refractory material's consumption dropped year by year. On the other hand, globalization trend is obvious, fierce competition makes refractories variety, performance and quality improved obviously, refractory enterprises strengthen their consciousness and ability for the user's service. Production of refractory cost in the developed countries is higher than the developing countries, at the same time, because of the stricter environmental requirements, forcing them to produce high value-added products only or export techniques, and transfer the bulk products, labor-intensive products to production in developing countries. Due to unique advantages of raw materials in China and labor cost advantage, so they will have more chances. In order to reduce costs, they are bound to move factories to China, for the development of China's refractories industry will also be an important opportunity. In addition, the communications and transportation’s convenient, the change of the international market, the increase of electronic commerce, etc., also brings a good opportunity to the development of refractory industry. Therefore, research and innovation of refractory raw materials at present and in the future, should grasp the opportunities in the following aspects:

1. Long life, low consumption of the ladle system refractory materials.

2. High efficient continuous casting and rolling system refractory materials.

3. The refractory materials of refining system outside the furnace.

4. High performance monolithic refractories.

 

5. Adapt to the new construction method of refractories.

The characteristics of Mullite Brick

Le 16 novembre 2016, 05:14 dans Humeurs 0

Mullite brick with mullite as phase of high aluminum refractory material. Has higher refractoriness, can reach more than 1790 . So what quality characteristics does Mullite brick have?

1. The brick binder of mullite brick. Mullite brick uses adhesive to connect between contact, therefore, the solid degree of adhesive bonding to give full play to the excellent properties of mullite brick base material, to the final use performance of the products is a very important factor.

2. Bulk density of mullite brick. The density of thermal insulation material generally should be lower than 600 kg/m. Small bulk density of material, generally tears eyes coefficient of thermal conductivity is small, but at the same time decreases in the mechanical strength, so need to reasonably choice.

3. The mechanical strength of mullite brick. To make the insulation material non-deformation and damage under their own weight and external force, so its compressive strength should not be less than 3 kg/cm.

4. The water absorption of mullite brick. After insulation material absorbing water, not only can greatly reduce the thermal insulation performance, but also can accelerate the corrosion of metal, it is very harmful. Therefore, need to choose small bibulous rate of thermal insulation material.

5. The heat resistance and use temperature of mullite brick. 

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