CN2387119Y

CN2387119Y - Separating blast furnace slag granulating device

Info

Publication number: CN2387119Y
Application number: CN99219108U
Authority: CN
Inventors: 牟行余; 谢军
Original assignee: Baotou Iron & Steel Design Inst Ministry Of Metallurgical Industry
Current assignee: Baotou General Design Inst of Iron and Steel, Chinese Metallurgy Building Group
Priority date: 1999-08-10
Filing date: 1999-08-10
Publication date: 2000-07-12
Anticipated expiration: 2009-08-10

Abstract

The utility model relates to a treatment for blast furnace slag, particularly a mechanical granulating and dewatering device for blast furnace slag. The utility model is an improvement on the existing furnace slag granulating device. The utility model separates a granulating wheel and a revolving drum dewaterer. A pneumatic lifter is connected with an inclined flow groove into a whole. The furnace slag granulating function is completed. Under the condition of the quality of the granulated slag guarantee, the utility model has the advantages of little water consumption and little energy consumption, and solves the difficult problems that the space before the blast furnace is narrow and the furnace slag granulation is affected. The utility model is especially suitable for blast furnaces with multiple slag outlets.

Description

The separate type blast furnace slag granulation device

The utility model relates to a kind of blast furnace slag processing device, particularly is applicable to the mechanical granulation of blast furnace slag and a kind of device of dehydration.

At present; both at home and abroad blast furnace slag is handled dual mode is generally arranged; a kind of is in stokehold shrend granulation; as russian patent No1181530; blast furnace slag enters granulating unit through the slag chute; the high-pressure cooling water of supplying with high-pressure hydraulic pump contacts; the slag quenching is broken into particulate and flows into detritus pool, delivers to the slag field after the water trap dehydration, and it is big that this mode consumes the high pressure water yield; strict to the slag temperature requirement of handling; if temperature drift easily produces foamy slag, temperature is on the low side; the slag caking is difficult for fragmentation, thereby influences the quality of grain slag.

The another kind of processing mode of blast furnace slag is to utilize the mechanical granulation slag; as notification number be: 23086053Y " makeup of wheel method furnace slag particle is put "; comprise transmission mechanism; slag slide mouth, pelletizer, water trap, hopper, aiutage etc.; be characterized in pelletizer and water trap close arrangement together; compare with first kind of mode; this apparatus structure compactness; floor space is little; owing to adopt the mechanical type granulated slag; slag quality after the processing is good, water content is little, low power consumption and other advantages, and this is used for newly-built large blast furnace crucial effect.But this device must be a pelletizer joins a water trap, takes up an area of tens meters of minimum widths, and two covers are arranged in juxtaposition the using and the reserved; take up an area of more than 300 square metre; for present many old blast furnaces, still do not have enough stokehold reserving spaces to use this device, and volume is at 1000m ³Following small furnace is generally an iron mouth, a cinder notch, and cinder notch and iron mouth all will be slagged tap, if adopt this device, then necessary last two covers, this both had been subjected to the restriction of reserving space for small furnace, and uneconomical again, simultaneously, maintenance, the maintenance workload of equipment are big.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of separate type blast furnace slag granulation device of novel texture is provided.

The technical solution of the utility model realizes in the following way: a kind of separate type blast furnace slag granulation device; by chute; granulation wheel and transmission mechanism thereof; the sediment groove; airlift; the oblique flow groove; rotary drum water trap and transmission mechanism thereof are formed; chute is above granulation wheel material; above the granulation wheel, be covered with petticoat pipe; rotary drum water trap inwall evenly is fixed with active clapboard; the blowpit that stretches into rotary drum water trap inner chamber will be transported by the grain slag of active clapboard holder to rotary drum water trap top; be connected with spill piece and header tank under the rotary drum water trap; the water of header tank is for the cold ground of granulation wheel water spray; be characterized in: the granulation wheel is isolating with the rotary drum water trap; decide relative distance between granulation wheel and the rotary drum water trap according to stokehold spatial size; its the two centre is connected to an integral body by airlift and oblique flow groove; granulation wheel below is provided with the sediment groove; airlift, compressed gas tube inserts in the sediment groove, and the suitable for reading of sediment groove is semiclosed form.

Bottom for above-mentioned utility model sediment groove is a ramped shaped, and it is low to insert airlift one lateral deviation.

For above-mentioned utility model, also can in the sediment groove, insert water pipe after the pressurization to the bottom, help airlift can bring into play better.

For above-mentioned utility model, a rotary drum water trap can be complementary with two or more granulation wheel components, is applicable to the blast furnace that has more cinder notch, finishes the slag treatment function.

The beneficial effects of the utility model are: the grain slag quality after this device can not only guarantee to handle; water consumption is little, and energy consumption is low, and it is narrow and influence the difficult problem of slag treatment to have solved the State of Blast Furnace front space; can establish the granulation wheel in the stokehold, and water trap has been arranged on the vacant ground of enough spatial.Simultaneously for small furnace, iron mouth and cinder notch can shared rotary drum water traps, so both guaranteed the use ability of this device, reduce expenses again, and be easy to utilize.

Below in conjunction with accompanying drawing the utility model is explained in detail:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is Figure 1A-A sectional view.

Embodiment:

A kind of separate type blast furnace slag granulation device; form by chute 1, granulation wheel 3 and transmission mechanism, sediment groove 4, airlift 6, oblique flow groove 7, rotary drum water trap 10 and transmission mechanism thereof; chute 1 is taken turns 3 oblique uppers in granulation; on granulation wheel 3, be covered with petticoat pipe 5; flue gas, the water vapor of being convenient to that granulating is produced are concentrated and are discharged, and reduce the workshop internal medium and pollute.Rotary drum water trap 10 inwalls evenly are fixed with active clapboard 13; blowpit 11 stretches in the rotary drum water trap 10; the rotary drum water trap is connected with spill piece 12 and header tank 2 for 10 times; water in the header tank 2 and make up water are for the 3 spray coolings of granulation wheel; granulation wheel 3 is isolating with rotary drum water trap 10; decide relative distance between granulation wheel 3 and the rotary drum water trap 10 according to stokehold spatial size; its the two centre is connected to an indivisible integral body by airlift 6 and oblique flow groove 7; finish the processing capacity of slag; granulation is taken turns 3 belows and is provided with sediment groove 4; the bottom of sediment groove 4 is a ramp shaped; above semiclosed opening; a side of inserting airlift 6 is totally enclosed; stretch into compressed air pipe 8 in the closed side of sediment groove 4; so that grain slag is dredged grain to suspended state, also can be inserted into sediment groove 4 bottoms from the water pipe 9 of header tank 2 drainages pressurization, help to make the grain slag porousness better.

Working process of the present utility model is: blast furnace slag flows to by the granulation of its actuator drives rotation through chute 1 and takes turns on 3; taking turns 3 working faces with granulation contacts mechanical disintegration and becomes grain slag; water coolant formation pulp water miscellany with granulation wheel 3 flows in the sediment groove 4; the water vapor that this process forms; flue gas is concentrated by petticoat pipe 5 and is discharged; because certain slope is arranged at sediment groove 4 bottoms; the pulp water miscellany easily flows to and inserts airlift 6 and compressed air pipe 8 one sides; blast pressurized air from compressed air pipe 8; when air pressure inside acquires a certain degree; the pulp water miscellany is mentioned certain altitude by airlift 6; deliver to rotary drum water trap 10 through oblique flow groove 7; after the active clapboard 13 of the rotary drum water trap 10 of rotation holds up the grain slag dehydration; transport by blowpit 11; so that deliver to the slag field; below rotary drum water trap 10, be connected with spill piece 12 and header tank 2 and be convenient to collect, for the water spray cooling of granulation wheel 3 by effusive recirculated water in the rotary drum water trap 10.

According to the quantity of tap cinder mouth, can select a rotary drum water trap 10 and a plurality of granulations to take turns 3 parts and be complementary, finish the slag treatment function.

Claims

1; a kind of separate type blast furnace slag granulation device; by chute [1]; granulation wheel [3] and transmission mechanism thereof; sediment groove [4]; airlift [6]; oblique flow groove [7]; rotary drum water trap [10] and transmission mechanism thereof are formed; chute [1] is at granulation wheel [3] oblique upper; be covered with petticoat pipe [5] in granulation wheel [3] top; rotary drum water trap [10] inwall evenly is fixed with active clapboard [13]; unload skewed slot and stretch into rotary drum water trap [10] inner chamber; be connected with spill piece [12] and header tank [2] under the rotary drum water trap [10]; the water of header tank [2] is for the cooling of granulation wheel [3] water spray; it is characterized in that: be connected to an indivisible integral body by airlift [6] and oblique flow groove [7] between granulation wheel [3] and the rotary drum water trap [10]; granulation wheel [3] below is provided with sediment groove [4]; sediment groove [4] is suitable for reading to be semiclosed form, and airlift [6] and compressed gas tube [8] insert in the sediment groove [4].

2, a kind of separate type blast furnace slag granulation device according to claim 1, it is characterized in that: the bottom of sediment groove [4] is a ramped shaped, its side of inserting airlift [6] is an encloses container.

3, a kind of separate type blast furnace slag granulation device according to claim 1 is characterized in that: a rotary drum water trap [10] can be connected by airlift [6] and oblique flow groove 7 with two or more granulation wheel [3] parts.