The invention provides a
tunnel kiln brick-making method. A
tunnel kiln comprises a preheating section, a
sintering section, a cooling section, a fuel and
combustion-assisting air conveying
system, a
temperature control system, a heat exchange
system and a
smoke discharging system. The
tunnel kiln brick-making method includes that a mixture of
smoke containing polluting gas like pyrolytic gas, volatile gas gas and
alkane generated by the preheating section and
combustion-assisting air is fed into the
sintering section to be mixed with fuel for mixed
combustion, wherein the polluting gas is fully oxidized and finally generate
carbon dioxide, water and the like along with combustion
smoke to be cooled through a
heat exchanger and then discharged. Hot air generated by the cooling section directly enters the preheating section to serve as preheated air, or the hot air generated by the cooling section together with normal-temperature air is heated through the
heat exchanger to be preheated air so as to achieve the objective of
waste heat recycling. By the tunnel
kiln brick-making method, energy
utilization rate of the tunnel
kiln in the prior art is increased further,
pollution, to surrounding environment, of discharged smoke is reduced, and effect of
energy conservation and emission reduction is realized.