| abstract |
The invention relates to the field of waste treatment, and the invention discloses a method for predecomposing cyanide outside a cement kiln, including the steps of mixing, decomposing and treating; The cyanide waste residue is heated and decomposed, and the waste gas is introduced into the waste gas treatment system of the cement kiln, which not only saves the investment of thermal decomposition equipment, but also saves the investment of the waste gas treatment system; A catalyst precursor supported by straw powder forms a metal oxide-supported catalyst during the thermal decomposition of cyanide, which has in-situ catalytic efficiency, has better catalytic cyanide decomposition efficiency, saves the time required for decomposition, and can To reduce energy consumption and increase processing efficiency. |