Metallurgy lime powder utilization system and technology method

A process method, lime powder technology, applied in the direction of process efficiency improvement, etc., can solve the problems of increased steelmaking production costs, low lime activity, increased lime consumption, etc., to reduce the lime consumption index per ton of steel and fast slagging speed , the effect of increasing the activity

Inactive Publication Date: 2015-09-30
HUATIAN NANJING ENG & TECH CORP MCC
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Metallurgy lime powder utilization system and technology method

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Comparison scheme
Effect test

Embodiment 1

[0035] The high-efficiency utilization system of metallurgical lime powder in this embodiment, the system includes a vibrating screen arranged on the lime raw material supply section for screening lime powder with a particle size below 5mm, and a lime powder briquetting ball for briquetting the lime powder Machine and the lime powder conveying unit connecting the vibrating screen and the lime briquette machine, wherein the lime powder conveying unit transports the lime powder screened out by the vibrating sieve to the lime powder briquette machine, and the lime powder The briquetting machine performs the briquetting operation on the lime powder to obtain a particle size of 20mm-40mm and a specific gravity of 1.9-2.2t / m 3 lime balls. The vibrating screen is arranged at the operation station of the bulk material feeding system of the steelmaking furnace.

Embodiment 2

[0037] Such as figure 1 As shown, the high-efficiency utilization system of metallurgical lime powder in this embodiment includes a vibrating screen arranged on the lime raw material supply section for screening lime powder with a particle size below 5 mm, and a lime powder briquetting ball for briquetting the lime powder. Machine and the lime powder conveying unit connecting the vibrating screen and the lime briquette machine, wherein the lime powder conveying unit transports the lime powder screened out by the vibrating sieve to the lime powder briquette machine, and the lime powder The briquetting machine performs the briquetting operation on the lime powder to obtain a particle size of 20mm-40mm and a specific gravity of 1.9-2.2t / m 3 lime balls. The vibrating screen is arranged at the tail of the lime kiln product belt conveyor.

[0038]The lime powder conveying unit includes a discharge chute connected to the sieve opening of the vibrating screen, and a lime powder stor...

Embodiment 3

[0044] The high-efficiency utilization process method of metallurgical lime powder in this embodiment is realized by adopting the above-mentioned high-efficiency utilization process method of metallurgical lime powder. The process method includes: separating and transporting the lime powder with a particle size below 5mm on the lime raw material supply section to the lime powder briquetting machine. Described lime powder is carried out pressure ball operation to described lime powder, obtains particle size as Specific gravity is lime balls.

[0045] Process flow of this embodiment

[0046] Lime kiln finished product belt conveyor tail or bulk material feeding system - vibrating screen (lime powder below 5mm screening) - discharge chute - lime powder intermediate storage bin - third belt conveyor - lime powder briquetting machine - first Four-belt conveyor—lime ball finished product warehouse—dump truck.

[0047] Explanation of the embodiment: the metallurgical lime passes...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/064C21C7/076
CPCY02P10/20
Inventor 崔荣峰杨云周钱永辉
Owner HUATIAN NANJING ENG & TECH CORP MCC
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