Preheating systems for bulk raw materials for rock wool, basalt fiber or glass production

Abstract

The invention discloses a preheating system for a blocky raw material for production of rock wool, basalt fibers or glass. The preheating system comprises a kiln, a material cabin and a feeding machine, wherein the material cabin is internally provided with a hot air distributor and an exhaust chimney; the upper end of the exhaust chimney extends outside the material cabin; an exhaust hole is formed in the upper end; the lower end of the exhaust chimney extends into the bottom of the material cabin; an air inlet is formed in the bottom; the hot air distributor is arranged in the middle of thematerial cabin and is communicated with a high-temperature exhaust chimney at the arch top of the kiln; a raw material inlet is formed in the top of the material cabin; a raw material outlet is formedin the bottom of the material cabin; the raw material outlet is communicated with the inlet of the feeding machine through a discharge valve; and the outlet of the feeding machine is communicated with the inlet of the kiln. By adopting the preheating system, a high-temperature flue gas of the kiln is recycled, the blocky raw material is preheated by using waste heat of the high-temperature flue gas, the primary temperature of the blocky raw material fed into the kiln is increased, and energy consumption of the kiln can be thus greatly reduced.

Description

technical field [0001] The invention relates to the technical field of inorganic non-metallic material processing, in particular to a preheating system for producing block raw materials of rock wool, basalt fiber or glass. Background technique [0002] Rock wool, basalt fiber or glass are produced from bulk rock or glass batch briquettes. During the melting process of bulk raw materials in the kiln, from cold solid state to softening and melting is a process of gradual conversion by absorbing heat. The melting temperature of bulk raw materials is usually above 1000°, which requires a large amount of heat energy to be absorbed, and the energy consumption of the kiln is very high. The high-temperature flue gas produced by the melting of the existing kiln is directly discharged into the atmosphere after preliminary purification, resulting in a great waste of energy, and the purification treatment cost of the high-temperature flue gas is relatively high. Contents of the inven...

AI Technical Summary

Problems solved by technology

The melting temperature of bulk raw materials is usually above 1000°, which needs to absorb a lot of heat energy, and the energy consumption of the kiln is very high

The high-temperature flue gas produced by the melting of the existing kiln is directly discharged to the atmosphere after preliminary purification, resulting in a great waste of energy, and the purification cost of the high-temperature flue gas is relatively high

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