Energy-saving tunnel kiln used for gangue sintered brick production

Abstract

The invention belongs to the technical field of gangue sintered brick production, in particular to an energy-saving tunnel kiln used for gangue sintered brick production. The energy-saving tunnel kiln comprises a drying kiln and a calcining kiln, wherein the calcining kiln comprises a kiln body extending along the horizontal direction, and a light kiln car, the kiln body comprises a kiln top, a kiln wall and a working passage, the working passage comprises a preheating section, a calcining section, a holding section and a cooling section in sequence along the extending direction, the cooling section at a kiln tail is provided with a cooling system, an under-kiln balance cooling system and a bootstrap system, a kiln temperature and kiln pressure monitoring and controlling system is also arranged on the kiln body, and the kiln temperature and kiln pressure monitoring and controlling system is provided with a computer automatic control system in a connected way. The energy-saving tunnel kiln has the beneficial effects that above-thermal calcining and fast calcining are realized, the calcining period is shortened, the calcining energy consumption is reduced, and the heat utilization rate is improved, so that the goal of energy saving is achieved.

Description

Technical field [0001] The present invention belongs to the production technology field of coal gangsters, and it involves a energy -saving tunnel kiln for coal gangster sinter bricks. Background technique [0002] The coal gangue rock sinking bricks mainly use shale and coal vermiculite for raw materials for high -temperature sintering. It has the characteristics of high strength, thermal insulation, and heat insulation. It is the best substitute for traditional clay solid bricks.The relevant policies of reform work, in addition to energy saving and saving land, the emission reduction effect is also significant.Waste use of waste, reduced environmental pollution, and improve the heat insulation performance of buildings.In heating areas, porous bricks can be built in winter more than 30%.Due to its good thermal insulation performance, the thickness of the wall is reduced, which can increase the area of the building by 1.13%. [0003] Since the introduction of foreign broken sinte...

AI Technical Summary

Problems solved by technology

However, in the specific production of coal gangue sintered bricks, it is often affected by raw materials, moisture content, brick type, climate, equipment, operation and management level, and there are many defects during drying and low yield; During the burning process of bricks in the firing section of the tunnel kiln, the maximum temperature reaches about 1100°C, and the temperature of the bricks in the cooling section drops from about 900°C to below 200°C. Generally, building materials companies use waste heat below 300°C to burn The drying of bricks can fully meet the heat required for the evaporation of water in the bricks, but the heat between 300°C and 900°C is not fully utilized, resulting in a great waste of energy

Moreover, the tunnel kiln also has the defects of insufficient control of cross-sectional temperature difference, small heat dissipation area, poor product quality, long roasting cycle, and low production efficiency.

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