Visual inspection and processing of pre laying refractory material

Boiler refractory brick masonry for planning is not the same for different, some refractory brick standard and scale error can not be satisfied with the penetration of building qualityrequirements, especially for hook range, azimuth and swollen joints of pipeline and the demand of pre laying refractory brick selection, processing or modification. According to the construction unit and product properties of refractory brick and insulating materials, all need the rainproof, moisture-proof, masonry construction is in the boiler plant engineering all completed before beginning construction, time is very tight, so the construction preparation work is very important

Some of the furnace body layout on boiler lying disorderly and the quality demand strict site, use of shaped refractory brick masonry part, a part of elected for pre laying, the pre laying intention:

1 see refractory brick shape is the quality demand is not to the satisfaction of the refractory brick masonry, according to the supply of a variety of refractory bricks and viewing and processing are not the same error mutual deployment status of application.

2 see planning drawings and refractory brick use is not a fault.

3 the operation personnel know characteristic and quality requirement of furnace body layout, understand the methods of operation, construction and what information the application state.

4 see refractory brick masonry function and quality status of mud

5 pairs of new materials, new technology and new method of operation to experiment

Pre laying flat places usually consolidation in the room. Refractory brick and method of operation of the use of the pre laying all should be the same as the formal construction conditions, in order to truthfully reflect the existence of doubt. The pre laying results should be recorded, about the existence of doubt to have solutions.

Using requirements of boiler with refractory material

Boiler burner band main properties of refractory material should have included slag resistance, high strength, wear resistance, thermal stability, thermal conductivity and other properties. The traditional refractory belt mainly used chrome refractory ramming material, but because of the domestic high quality chrome resource scarcity, therefore is the main use of silicon carbide ramming material, silicon carbide high alumina coating material, high aluminum phosphate can be plastic, high temperature expansion plastic.

Of which the first two kinds of materials of high prices, but the long service life, good performance, and then two kinds of material price is low, but performance in general, and short service life. Therefore in the cyclone furnace liquid slag furnace and should not be used in high phosphate refractoryplastic or ramming material,to avoid peeling or cracks in use in the production, so as to enhance the slag resistance of material and reduce the repair frequency.

High-temperature micro expansion refractory plastic and super 3000 water clayrefractory material performance fairly, has shown some advantages in the application to the wall pipe and boiler furnace top. But this kind of material in its solidification time is long, easy to dry shrinkage crack, thus for the construction and maintenance of a great deal of trouble. At the same time the supplier quality there is a certain fluctuation, sometimes refractoriness and normal temperature strength of less than 1580 degrees and 981N/cm2.