Metallurgy lime powder utilization system and technology method

Abstract

The invention discloses a metallurgy lime powder utilization system and a technology method. The system and the technology method are mainly designed for effective recycling of lime powder in the metallurgy process. The metallurgy lime powder utilization system comprises a vibrating sieve, a lime powder ball press and a lime powder conveying unit, wherein the vibrating sieve is arranged on a lime raw material supply section and used for screening lime powder with the grain size smaller than 5 mm; the lime powder ball press is used for performing ball pressing on lime powder, and the lime powder conveying unit is used for communicating the vibrating sieve and the lime powder ball press. The lime powder conveying unit conveys the lime powder screened out by the vibrating sieve to the lime powder ball press, the lime powder ball press carries out ball pressing on the lime powder so that lime balls with the grain size being 20-40 mm and the special gravity being 1.9-2.2 t / m<3> can be obtained, and the lime balls are returned for steel making. The lime powder for metallurgy and with the grain size smaller than 50 mm is separated, recycled and used. Meanwhile, negative effects of the lime powder in the steel making and producing process are also avoided.

Description

technical field [0001] The invention relates to a metallurgical lime powder utilization system and a process method. Background technique [0002] Iron and steel enterprises are the basic industry of the national economy. With the rapid development of the national economy, steel production has been increasing in recent years. my country's crude steel production in 2013 reached 779 million tons, accounting for 48.48% of global crude steel production. With the popularization of the "3R" design concept and the improvement of steel mills' awareness of steel slag recycling and production cost reduction, the recycling of steelmaking derivatives (such as steel slag, dust, sludge, etc.) has gained more and more users. At the same time, people often overlook the high consumption caused by the characteristics of bulk raw materials. [0003] Metallurgical lime, as the main bulk raw material necessary for steelmaking production, is a commonly used "slagging agent" in steelmaking produc...

AI Technical Summary

Problems solved by technology

The important reason for its high consumption is that besides the low activity of lime itself, there is also a certain proportion of powder in metallurgical lime. This part of lime powder enters the primary dust removal system and is eliminated during the feeding process, making the slagging agent Increased lime consumption, resulting in increased production costs for steelmaking

Images