Method for preparing refractory material adhesive from oxidized wastewater sludge in aluminum alloy section plants

Abstract

The invention relates to a method for preparing a refractory material adhesive from oxidized wastewater sludge in aluminum alloy section plants, which comprises the following steps: taking sludge, washing with water, carrying out vacuum filtration, adding 10-30% of sludge into a reaction vessel on dry basis of sludge, adding 10-30% of sludge into the reaction vessel, adding 20-40% of water, and regulating the sludge into paste; slowly adding 40-60% of phosphoric acid, heating until the mixture temperature reaches 80-120 DEG C, promoting chemical reaction while continuously stirring, and finishing the reaction when the solution becomes clear and transparent; and cooling to room temperature, and standing for 24 hours to obtain the refractory material adhesive. The main component is aluminum dihydrogen phosphate, the pH value is 1.46, and the density is 1.45-1.47 g / cm<3>. The method is simple and easy to implement and low in cost, can recycle the oxidized wastewater sludge in aluminum alloy section plants, achieves the goal of waste comprehensive utilization, and reduces the environmental pollution caused by direct discharge of waste.

Description

technical field

[0001] The invention relates to a treatment method for oxidized wastewater sludge from an aluminum alloy profile factory, in particular to a method for preparing refractory material binders from the oxidized wastewater sludge from an aluminum alloy profile factory. Background technique

[0002] A large amount of waste water and sludge will be generated during the production and processing of aluminum alloy profiles. The sources are as follows: ①The alkaline solution after the mold is boiled and washed is all discharged into the waste water, which wastes a lot of alkali and generates a large amount of sludge every day; ②With the During the production, the aluminum in the alkali etching tank will continue to accumulate, and when it reaches a certain level, it will be discarded and discharged, and a large amount of alkali will be wasted and a large amount of sludge will be generated; carry out, the ...