CN2268910Y - Continuous aluminum melting and temperature holding furnace using gas fuel - Google Patents

Abstract

The utility model relates to a gas continuous melting holding furnace for aluminium. In the utility model, the inner part of the charging tower of a furnace body is provided with a charging path whose caliber has a small upper part and a big lower part for ensuring that various shapes aluminum can easily fall from the charging path, aluminium liquid melted on a melting platform going through a slag storing platform, an insulation pool and a gas processing pool in sequence goes in a still standing pool, a filtering plate is arranged between the still standing pool and a liquid getting pool for causing aluminium liquid which is finished deslagging treatment and degassing treatment to be done slag filtering treatment by the filtering plate, and the utility model can obtain high quality aluminium liquid with lower impurity amount.

Description

The coal gas continuous melting holding furnace that is used for aluminium

The utility model relates to the coal gas continuous melting holding furnace that is used for aluminium.

Traditional aluminium melting furnace, its purposes is molten into various aluminiums behind the aluminium liquid and is remained in certain operating temperature, this aluminium liquid then can provide taking of aluminum casting machine, to cast out various needed aluminum products, so the aluminium melting furnace is the limit stove of aluminum products casting machine.Relevant present employed melting furnace, No. 145219, No. 134,093 two parts of patents of the same name " the metal fusion keeps stove " that finding has the Taiwan patent announcement, the structure of the two all is to be provided with the feed column chamber in melting and heat preservation stove one end, the indoor feed channel and the bottom that are the isometrical moulding of straight tube of being provided with of this feed column is formed with bed surface, opposite side in bed surface is formed with the tilt table chamber, it has the inclination bed surface, and inclination bed surface one side then communicates with the bed surface in insulation pond, this insulation Chi Chuyi is provided with and carries out temperature controlled insulation burner, uses the temperature that keeps aluminium liquid in this insulation pond; Difference only is, the aluminium liquid that the former is incubated the pond is flowed directly to via runner in the pond that draws water of back segment and takes for the aluminum casting machine; And the latter flow to the gas treatment pond of back segment earlier, be provided with the bubble treating apparatus in this gas treatment pond, the noble gas of being imported by the bubble treating apparatus is to remove the hydrogen in the aluminium liquid, making aluminium liquid contain gas flow reduces as much as possible, and then flow into from another connected entrance and to get liquid pool, use for the aluminum casting machine.

More than two stoves when reality is used, all be aluminium (cold material) or foundry returns etc. to be dropped into the feed column chamber from charge door, be piled up in it, the gas burner via bottom, feed column chamber gives heat fused again.Because the feed channel of feed column chamber is straight-tube shape, the bore that is upper and lower side is identical, so feed channel design, in aluminium or after containing the foundry returns input feed channel of other assorted material, will be owing to the feed channel design that waits bore makes the material that is positioned at the top be subjected to the bridging action influence, can't make upper layer of material move down smoothly with the gravity relation, and must climb to the feed channel top by the operating personnel, promoted with stock or instrument again, make the operating personnel that be positioned at this place work on must bear the working environment that be positioned at suitable high temperature because the high temperature in the melting furnace is risen by charge door this moment.

And the aluminium liquid after the fusing is through the tilt table surface current during to moist closet, because various aluminiums or melt down assorted material such as being mingled with scrap iron in the material unavoidably, so aluminium liquid very easily makes the assorted material that contains go into to be incubated in the pond via the tilt table surface current in flow process, so assorted material very easily causes the obstruction of runner, and on-the-spot operating personnel is for overcoming this shortcoming, then directly will push without the aluminium material of fusing in the insulation pond, and cause material directly to contact and increase temperature and the not good situation of liquation qualitative control with liquation.

The above-mentioned again latter, originally for improving aluminium liquid quality, the spy is provided with a gas treatment pond in being incubated the pond and getting between liquid pool, enter via the noble gas of input and to finish the degassing behind the aluminium liquid and handle, the fusing of right this kind aluminium liquid is made, when leading portion fusing operation, it is the design that utilizes the inclination bed surface of tilt table chamber, therefore contain a large amount of impurity and bubble in the aluminium liquid after the fusing, though utilize the difference design of aluminium liquid liquid level and partition wall height, be difficult to reach the effect of effective removal residue in fact, though degassing row, residue is deposited especially, is difficult to guarantee product quality.

The purpose of this utility model provides a kind of coal gas continuous melting holding furnace that is used for aluminium.The foundry returns that this stove can make various aluminiums or size shape differ successfully falls into the melting furnace bottom and carries out heat fused, both can exempt from the anxiety of runner obstruction, can improve the quality of final aluminium liquid again greatly.

The purpose of this utility model realizes as follows: a kind of coal gas continuous melting holding furnace that is used for aluminium, formed by last lower furnace body, wherein upper furnace body is provided with feed column and inside is provided with a feed channel, and relative lower furnace body place, feed channel bottom is provided with a fusing platform, be provided with highly lower storage slag platform in the side of fusing platform is adjacent, storage slag platform then with between adjacent insulation pond communicates with chute, and the insulation pond is then with set runner and gas treatment pond, and then with get liquid pool and communicate, its characteristics are, above-mentioned fusing platform and adjacent storage slag platform are designed to horizontal, so that aluminium liquid flows out storage slag platform, and residue resides on two platforms.

The purpose of this utility model can also following mode realize: the feed channel in the above-mentioned feed column is that the upper end bore is little, and the lower end bore is the taper pipe design more greatly.

Or in the above-mentioned gas treatment pond and get and set up one between liquid pool and leave standstill the pond, in leaving standstill the pond and getting and establish a port between liquid pool, two sides of this port are formed with chute again, are inserted with to make aluminium liquid by for the filter that filters dregs between chute.

Also can both make the feed channel in the feed column be taper, and behind the gas treatment pond, set up again and leave standstill pond and chute thereof, filter.

All filters that is positioned at above-mentioned passage port all can be designed to the honeycomb ceramic filter screen.

The utility model comparison prior art has following advantage:

One. because designed feed channel is that to be upper port footpath less and the lower end bore is bigger in the feed column, make when the aluminium material be piled up in feed channel and lower end material melt remove after, the material that is positioned at the top can be shifted downwards smoothly and enters the combustion melting position, and unlikely bridge formation that causes material or material must be carried out the dangerous play of ejection material by the staff can't move down the time in the charge door place of high temperature.

They are two years old. and since fusing platform and storage slag platform be designed to horizontal, make the aluminium material after being subjected to the heating fusion, oxide scale film that is produced or dregs will stay on this fusing platform as much as possible, the higher aluminium liquid of quality is then dripped in storage slag platform place by fusing platform lateral margin after the fusion, after this storage slag platform of process is store slag work again, begin to flow in the insulation pond, thereby improve the product of aluminium liquid once more and reduce residue content.

They are three years old. because gas treatment pond and get and set up between liquid pool and leave standstill the pond, and this leaves standstill the pond and gets and is provided with a filter between liquid pool, can in leaving standstill the pond, act on fully through contained size bubble in the aluminium liquid after the nitrogen treatment and finishing, again through the filter further filter residue bubble that goes out, can obtain pure aluminium liquid, after casting with this, can obtain the better aluminum products of quality.

Further specify design feature of the present utility model below in conjunction with accompanying drawing and most preferred embodiment:

The accompanying drawing simple declaration

Fig. 1 is a body of heater Lower Half vertical view of the present utility model.Fig. 2 is the cutaway view of the utility model feed column part.Fig. 3 is the A-A direction cutaway view of Fig. 1.Fig. 4 is the B-B direction cutaway view of Fig. 1.Fig. 5 is the C-C direction cutaway view of Fig. 1.Fig. 6 is the D-D direction cutaway view of Fig. 1.Fig. 7 is the E-E direction cutaway view of Fig. 1.Fig. 8 is the F-F direction cutaway view of Fig. 6.

Referring to Fig. 1,2, holding furnace of the present utility model is made up of upper and lower body of heater, inside between last lower furnace body forms the hole, for the fusing of aluminium material and the usefulness that storage is incubated or material is got in confession, wherein an end of upper furnace body is designed to a feed column 10, being provided with vertical feed channel 12 and top in this feed column 10 communicates with the external world to be formed with a charge door 11 and to cooperate and is provided with a bell, aforementioned feed channel 12 is that to be designed to one be little at the bore at charge door 11 places than the bore of bottom end opening, so that to form a top be small-bore and the below is bigbore feed channel 12.

Because designed feed channel 12 is up-small and down-big taper pipelines, in the aluminium material that drops into after heat fused, the material of bottom can move down fusing in advance, though and the material in stage casing is the difformity size, but because its feed channel 12 designs for taper, so material still can be moved down smoothly, and be unlikely the situation that causes bridge formation, so can make the aluminium material carry out heat fused after feeding intake smoothly.

Lower furnace body is designed to fusion platform 30 and a side in abutting connection with the lower storage slag platform 31 in a position is arranged with respect to 12 of aforementioned feed channels again, on the lower furnace body sidewall, be provided with two burner installing ports 32 installing and fixing for two coal gas fusing burners 40 with respect to fusing platform 30 places, then be provided with except that cinder notch 35 on the sidewall of relative side and cooperate and be provided with a side cover 351, be provided with except that cinder notch 33 with respect to the sidewall of storage slag platform 31 1 ends again and be equipped with side cover 331, aforesaid fusing platform 30 can be for being positioned at this place after the charging of aluminium material and giving heat fused by coal gas fusing burner 40, can wander on storage slag platform 31 through the aluminium liquid 21 after the fusing, flow in the insulation pond 50 (as shown in Figure 3) via chute 34 again, owing to have fusing platform 30 that is horizontal bottom and the design of storing slag platform 31, make aluminium liquid first dregs or oxide scale film etc. to be removed in advance, so that the aluminium liquid that flows in the insulation pond has preferable quality.

Cooperate again referring to Fig. 1,3, this insulation pond 50 is provided with coal gas insulation burner (not shown) in the appropriate position, the sidewall that is positioned at insulation pond 50 again is provided with except that cinder notch 53 and a bell 52 is installed, the in addition end in insulation pond 50 communicates with gas treatment pond 61 with runner 51, and gas treatment pond 61 then utilizes runner 62 and leaves standstill pond 70 and communicate.

Referring again to Fig. 7,8, leave standstill pond 70 and get and then be formed with a port 71 between the liquid pool 80, the dual side-edge of this port 71 is formed with chute 72, these chute 72 places can be for being provided with a filter 73, this filter 73 can be designed to honeycomb ceramic filter screen (cooperating referring to shown in Figure 7), via above-mentioned arrangement design, in the insulation pond 50 through filtering the aluminium liquid behind the dregs first, the input that can enter cooperation nitrogen in the gas treatment pond 61 is with the processing that outgases, finishing aluminium liquid after the degassing is handled then flows into and leaves standstill in the pond 70, the bubble that this fashion effect finishes can be reached effect fully herein, the aluminium liquid of handling through the degassing then can be by the filtration of filter 73 afterwards, so that littler dregs or oxide scale film removed, flow into the aluminium liquid of getting in the liquid pool 80 this moment will be more pure, so that the aluminum products that cast out have higher quality.

The utility model is when the actual fusing of carrying out the aluminium material, at first aluminium ingot or aluminium material (containing the impurity foundry returns that size shape differs) etc. is sent in the body of heater with batch charging mechanism by the charge door 11 of feed column 10, the material that this size shape is different will be piled up in feed channel 12 and fusing platform 30 places, can make the material fusing after utilizing this moment material on 40 pairs of fusing platforms 30 of coal gas fusing burner to heat, be subjected to staying on the high temperature melting rear platform oxide scale film and slag, and the higher aluminium liquid of fusion and quality can flow and drips on storage slag platform 31, flow in the insulation pond 50 that is airtight via chute 34 again, and the aluminium liquid one side that is positioned at insulation pond 50 is kept temperature by coal gas insulation burner, enter in the gas treatment pond 61 via runner 51 simultaneously, processing is outgased the gas in the aluminium liquid after feeding nitrogen, flow into via runner 62 again and leave standstill in the pond 70, after bubble to be differed in size acts on fully and finishing, aluminium liquid after the degassing can enter after with dregs or oxide scale film elimination via the filtration of filter 73 and get liquid pool 80, to obtain and to provide mold employed purified aluminum liquid.

Claims (4)

1. coal gas continuous melting holding furnace that is used for aluminium, formed by last lower furnace body, wherein upper furnace body is provided with feed column and inside is provided with a feed channel, and relative lower furnace body place, feed channel bottom is provided with a fusing platform, be provided with highly lower storage slag platform in the side of fusing platform is adjacent, storage slag platform then with between adjacent insulation pond communicates with chute, and the insulation pond is then with set runner and gas treatment pond, and then with get liquid pool and communicate, it is characterized in that: described fusing platform and adjacent storage slag platform are designed to horizontal, so that aluminium liquid flows out storage slag platform, and residue resides on two platforms.

2. the coal gas continuous melting holding furnace that is used for aluminium according to claim 1 is characterized in that, the feed channel in the described feed column is that the upper end bore is little, and the lower end bore is the taper pipe design more greatly.

3. the coal gas continuous melting holding furnace that is used for aluminium according to claim 1, it is characterized in that, described gas treatment pond and get and set up one between liquid pool and leave standstill the pond, and be provided with a port between liquid pool in leaving standstill the pond and getting, two sides of this port are formed with chute, are inserted with to make aluminium liquid by the filter for the filtration dregs between chute.

4. the coal gas continuous melting holding furnace that is used for aluminium according to claim 3 is characterized in that the filter that wherein is positioned at passage port is designed to the honeycomb ceramic filter screen.

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