CN1803343A

CN1803343A - Method for pushing and refloating slag from iron smelt

Info

Publication number: CN1803343A
Application number: CN 200510000539
Authority: CN
Inventors: 盛富春
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-10
Filing date: 2005-01-10
Publication date: 2006-07-19

Abstract

The invention discloses a hot-metal dreg gathering and gaining method, which comprises the following steps: immersing the dreg-rake at the dreg gathering position in the rotary gathering machine; opening two dreg-rakes to display one straight line to do horizontal movement toward bag hole along; gathering the dreg to drain out through bag hole. The invention reduces the iron loss rate greatly and cleans large block of dreg, which integrates dreg gathering with gaining property as a whole to improve the producing efficiency further.

Description

A kind of method for pushing and refloating slag from iron smelt

Technical field

The present invention relates to a kind of method of removing scum in the ladle, belong to the metallurgy profession field.

Background technology

The bits that float on the ladle liquid level need in time to remove.Traditional method is that machinery is skimmed, and promptly adopts reciprocating slag rake that bits are clawed from the ladle mouth, and the major defect of this way is the band iron rate height of skimming, and the iron loss amount is big, and scarfing cinder efficient and scarfing cinder rate all can not be satisfactory.

Publication number is 1546259 Chinese patent application " efficient slag skimming method of a kind of molten iron and isolated plant thereof ", a kind of slag method and special equipment thereof of dragging for disclosed, adopt slag rake swinging slag inclusion method, ladle liquid level bits are gathered in the revolution of two slags rake to be clamped, the slag that raises is then harrowed and it is moved apart ladle, and slag is put into slag bucket, and this method has the slag of dragging for rate height, band iron is few, drags for short advantage of slag time.But this slag mode of dragging for has dry slag and has the bulk slag that time operation is not smooth at the ladle mouth, this is because the dry slag of bag wall has hindered the normal gyration of slag rake.And the advantage of Cinder Machine has shown in this case.But adopt a dragveyer, Cinder Machine cooperate scarfing cinder industrial be again unpractical, the one, increased the equipment input, the more important thing is very difficulty of apparatus arrangement, and floor space is too big.

Summary of the invention

Technical problem to be solved by this invention provides a kind of method for pushing and refloating slag from iron smelt, and collection drags for slag, skimming operates in one, uses an equipment to address the above problem.

In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme.

A kind of method for pushing and refloating slag from iron smelt, it is characterized in that: at first the slag of swinging dragveyer rake is immersed in the ladle slag and assemble more position, handle two slags rake and open and be straight line, then to the flat motion of bag mouthful horizontal saliva, handle two slags rake in the motion and close up poly-slag gradually, slag is clawed, pulls out from the bag mouth.

The degree of depth that slag rake immerses the molten iron liquid level is according to the difference of ladle physical dimension, tilt angle and dross situation and difference, and its principle is that slag can claw smoothly from the bag mouth.

The length of the slag rake of selecting for use is the 25--70% of ladle radius, is preferably the 40--60% of ladle radius.

The method of handling the horizontal movement of slag rake is that dragveyer is installed on the flatcar, relies on the platform advance and retreat to realize; Another kind method is that the slag rake is installed on the telescopic arm, by its flexible realization.

The present invention has following characteristics: (1) owing to adopted swinging to drag for the slag method, scarfing cinder band iron amount is less, and the iron loss rate reduces significantly.(2) utilize the active force of flatcar or telescopic arm, can claw by mandatory slag, also the bulk slag can be removed smoothly ladle mouth bonding.(3) integrate and drag for slag and skim, occupation area of equipment is little, is convenient to arrange that production efficiency further improves.

Description of drawings Fig. 1 takes off the structural representation that drags for slag embodiment isolated plant among the present invention.

Fig. 2 is the structural representation of slag rake driving mechanism among this embodiment.

The specific embodiment

What describe below is that taking off among the present invention dragged for the slag isolated plant, and this only is a kind of instantiation of realizing said method, and method in fact of the present invention can also derive taking off of other multiple versions and drag for slag equipment.

Of the present invention taking off dragged for the slag isolated plant, comprise flatcar track 8, the flatcar 7 that on flatcar track 8, back and forth moves, and the cantilever 4 that is connected with flatcar 7 by lifting main shaft (oil cylinder) 5, in the transmission case 2 of the front end of cantilever 4, tooth bar 10 has been installed, it is meshed with the gear 11 of both sides, and two gyroaxises 3 are fixed together the rear end of two gears 11 and two slags rake 1.Wherein slag rake 1 can be made by refractory material, also can be made by other material.The length of the single slag rake of selecting for use is about 50% of ladle radius.

The rear end of tooth bar 10 is connected with oil cylinder 9, and tooth bar 10 drives advance and retreat by oil cylinder 9, drives slag rake 1 by gear 11 and gyroaxis 3 and does gyration.In fact, the drive form of realizing swinging slag rake has multiple, and the rack-and-pinion method is wherein a kind of, and other driving method can be hydraulic pressure or powered version such as gear, cam, worm and gear, chain type, belt-type, oscillating oil cylinder.

The motion of flatcar 7 on flatcar track 8 can be driven by motor and hoist engine link chain mechanism, also can be by flatcar self power drive.

Hydraulic system (oil pump and fuel tank) 6 can be fixed on the rear end of cantilever.

In addition, cantilever 4 can be designed to hydraulic telescopic type according to customer requirements.Flatcar 7 can adopt motorized motions, so that accurately locate, realizes the full process automatization control operation.

The lifting of cantilever 4 can also be adopted the chain type lifting except above-mentioned hydraulic driving mode, the elevator lifting, and the silk cylinder drives lifting, and rack-and-pinion drives multiple modes such as lifting.

The slag process of dragging for is once taken off in narration below, as efficiently taking off a specific embodiment that drags for the slag method among the present invention.

(1), when ladle (jar) enter the station put in place after, flatcar proceeds to suitable taking off and drags for the slag station under motor or hydraulic power drive;

(2), lifting main shaft (oil cylinder) work, by cantilever the slag rake is immersed in the ladle slag and assembles more position, the following appropriate depth of molten iron liquid level, the slag rake is opened and is straight line;

(3), flatcar retreats under motor or hydraulic power drive, two slags rake closes up gradually during near bag mouthful, by the hydraulic-driven of oil cylinder, makes the slag rake make the gyration slag inclusion;

(4), after two slags rakes moves to bag (jar) mouthful, will wrap mouth dry slag and bulk slag and claw from wrapping mouth;

(5), lifting main shaft (oil cylinder) promotes cantilever and drives the slag rake and leaves ladle;

(6), flatcar draws back under motor or hydraulic power drive, and just all leaves ladle (jar) position to the slag rake;

(7), two slags rakes reversed turning respectively, slag wherein promptly drops near the slag charge bucket of ladle (jar).

Claims

1, a kind of method for pushing and refloating slag from iron smelt, it is characterized in that: at first the slag rake with the swinging dragveyer immerses the more position of slag gathering in the ladle, handling two slags rakes opens and is straight line, then to the flat motion of bag mouthful horizontal saliva, handle two slags rake in the motion and close up poly-slag gradually, slag is clawed, pulls out from the bag mouth.

2, method for pushing and refloating slag from iron smelt as claimed in claim 1 is characterized in that: the length of the slag rake of selecting for use is the 25--70% of ladle radius.

3, method for pushing and refloating slag from iron smelt as claimed in claim 2 is characterized in that: the length of the slag rake of selecting for use is the 40--60% of ladle radius.

4, as claim 1 or 2 or 3 described method for pushing and refloating slag from iron smelt, it is characterized in that: the method for handling the horizontal movement of slag rake is that dragveyer is installed on the flatcar, relies on the platform advance and retreat to realize.

5, as claim 1 or 2 or 3 described method for pushing and refloating slag from iron smelt, it is characterized in that: the method for handling the horizontal movement of slag rake is that the slag rake is installed on the telescopic arm, by its flexible realization.