Treatment process of sludge through dezincification in rotary hearth furnace

Abstract

The invention discloses a treatment process of sludge through dezincification in a rotary hearth furnace, and in particular relates to a wet batching treatment process. The process comprises the following steps of: step 1, lengthening the existing batching belt by 15 meters; step 2, increasing the treatment amounts of two filter presses, wherein the treatment amount of each filter press is 4-6 t / h; step 3, increasing the treatment amount of one feeding pump by 10-12 t / h; step 4, dedusting and transforming the top of a storage bin top, removing six dedusting fans on the bin top of the rotary hearth furnace, and directly blowing a pulse valve with a pulse controller; step 5, increasing dust absorption point on the batching belt; step 6, washing the filter presses with sewage; and step 7, tracking the material: feeding the batching amount of the original batching bin to a belt, and tracking the carbon content, moisture, and instant material amount of the material on the belt so as to ensure the material parameter of the material on the belt before a grinding machine.

Description

Technical field [0001] The invention belongs to a process method in the smelting industry, and specifically relates to a rotary hearth furnace dezincification sludge treatment process. Background technique [0002] At present, the process design of the rotary hearth furnace system of most steel mills adopts dry batching. The sludge is dehydrated by a centrifuge and then dried by the secondary sludge to continue dehydration. The sludge contains less than 1% and then is transported in dense phase. Go to the batching warehouse for batching, but in the production practice process, dry batching has the following technical defects: [0003] 1. The secondary sludge drying system has many failures, and the dry amount of sludge is far from meeting the production needs, which seriously restricts production. [0004] 2. In order to meet the requirements for material moisture in pelletizing, water should be added to the humidifier and moisturizer respectively, and the control is between 6.8-8.0...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is that in the prior art, due to the uneven discharge of the centrifuge, the stability of the ingredients is affected and the humidifier is easily blocked; the operation of the centrifuge is unstable and there are many faults; Requirements and meet the batching needs; high operating costs, high maintenance costs and other technical problems, and provide a kind of rotary hearth furnace dezincification sludge treatment process

Images