CN204661791U - Two-stage calcination method ore reduction volatilization interlock production system - Google Patents
Two-stage calcination method ore reduction volatilization interlock production system Download PDFInfo
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- CN204661791U CN204661791U CN201520170817.3U CN201520170817U CN204661791U CN 204661791 U CN204661791 U CN 204661791U CN 201520170817 U CN201520170817 U CN 201520170817U CN 204661791 U CN204661791 U CN 204661791U
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Abstract
The utility model relates to a kind of two-stage calcination method ore reduction volatilization interlock production system, belongs to metal metallurgy smelting technical field.The utility model is for solving in ore roasting process faced by large production unit institute and the difficult point of the every technology run into, the improvement project designed as difficult problems such as ring formation, reduction and volatilizations in energy-saving consumption-reducing, dust, kiln.Production process is ore pellets material drying in one section of stoving oven, burns to certain temperature, transfers in two-stage calcination stove and carries out secondary coal blending and oxygenation intensification roasting, completes the roasting process of ore reduction volatilization.
Description
Technical field
The utility model belongs to non-ferrous metallurgy technology field, is specifically related to a kind of two-stage calcination method ore reduction volatilization interlock production system.
Background technology
In field of metallurgy, particularly pyrometallurgy field, due to many ores, as low-grade manganese, red soil nickel ore, Pb-Zn deposits etc., the method of simple economy cannot be adopted to carry out richness to its valuable element gather, that has to adopt electric furnace or blast furnace to ore directly carries out smelting to extract its valuable element.High power consumption or the existing bottleneck having become enterprise's production cost of burnt consumption.
For the separating-purifying of element in most ore, main interfering component is exactly iron, calcium, magnesium etc., adopts calcining magnetic separation method iron and other Component seperation, has been proved to be economic preparation of ore scheme.But the large industrialized equipment reaching the good roasting effect of ore but always has problem to occur, that low cost cannot be formed, stable suitability for industrialized production.
Modern ripe large industrialized production technique, general employing kiln process process height volatiles material, shaft furnace process process prereduction and sintered material.The efficiency utilization of shaft furnace heat energy, the efficient volatile performance of rotary kiln, always can not reach organic combination.In production process, high-moisture is for the security threat of shaft furnace, and ring formation problem, for the threat of rotary kiln, all becomes the short slab of these main equipments.
For some ore, its temperature is needed to control the roasting effect that just can obtain at the initial fluxing point of ore in roasting process, with the domestic rotary kiln generally used now, there is maximization and the high advantage of output, but owing to cannot effectively be solved owing to there is ring formation in actual production, need blowing out process, then lose the stability of production.Such as rotary kiln baking magnetic separation technology is in the application of red soil nickel ore process, and the stably manufactured cycle only has 20-30 days, and maintenance needs 20-30 days.Its reason is exactly the generation that cannot stop ring formation of rotary kiln problem, and after generation, production output disappears, and maintenance penalty is high.
Energy-conservation aspect, the Material Filling Ratio of shaft furnace is up to more than 80%, and heat energy just must be got rid of by cold material, and heat utilization efficiency is high.But for the process of volatile material, because top material is cold burden, the material volatilized is cooled at such a temperature and cannot come out of the stove, therefore can not as effective equipment of this type of material of process.
For the reduction apparatus containing high ferro material, because high ferro material melts point is low, the energy consumption of needs is low, and a small amount of burning of coal heat can reach the low speed volatilization of top material moisture, reaches the effect of sintering.Thering is provided of high-content coal, can cause moisture to volatilize fast, very easily forms the swelling pressure and destroys body of heater, this inharmonious, makes shaft furnace create limitation as ore reduction roasting apparatus.
Treating flour dust aspect, rotary kiln needs strong air blast to promote temperature, and in rotary kiln rotation process, material is taken out of by the wind flowed because friction produces a large amount of dust, and Dust Capacity is very large, needs the dust collecting system of a few cover just can be governed.The air input that shaft roasting needs is little, and material fluidity is slow, and material is again exist in pelletizing mode, and the Dust Capacity of generation is little, and outlet is water vapour substantially, can solve as long as adopt water to drench treatment system.
In view of above reason, be necessary to develop a kind of new installation or new treatment process, draw the advantage of shaft furnace, overcome its defect, make the roasting reduction of iron in ore in less energy-consumption, high recovery, accomplished under the condition of ring formation Resolving probiems.
If can solve ore after roasting flow process simultaneously, volatile material is volatilized completely, and iron is well reduced, ore structures will be broken completely, for follow-up separating-purifying flow process relatively easily, this is to the smelting technology progress of home ore industry, and energy-saving and emission-reduction are significant.
Utility model content
The purpose of this utility model is to solve the deficiencies in the prior art, a kind of two-stage calcination method ore reduction volatilization interlock production system is provided, the high temperature calcination section needing the intensification Duan Yuyi that dewaters of long time treatment to break down is carried out a point stove process by this system, the equipment choice of high temperature calcination section adopts small-sized, multiple and standby mode to produce, thus avoid the failure rate of main equipment, the quick-replaceable of bantam, repairs fast, has ensured the stability of producing.
The technical solution adopted in the utility model is as follows:
Two-stage calcination method ore reduction volatilization interlock production system, comprises one section of stoving oven and two-stage calcination stove;
One section feeding mouth place of one section of described stoving oven is provided with feed system, and the top of one section of stoving oven cools with steam and the inlet end of smoke processing system is connected, and the outlet side of steam cooling and smoke processing system is connected with discharge flue;
The bottom of one section of described stoving oven is provided with one section of discharge system, is provided with high-temp. furnace material transfer system, is shifted by high-temp. furnace material by high-temp. furnace material transfer system, and be added to two-stage calcination stove from two section feeding mouths immediately below one section of described discharge system;
One section of described discharge system is connected with two-stage calcination stove with dust and volatile matter gathering system by primary reformer inlet system successively;
Described two-stage calcination furnace bottom is provided with two sections of discharge systems, and secondary reformer enters coal inlet system and is connected with two sections of discharge systems.
Further, preferably, comprise the two-stage calcination stove of multiple parallel connection, the parallel connection of multiple two-stage calcination stove is connected with primary reformer inlet system by dust and volatile matter gathering system afterwards.
Further, preferably, one section of described stoving oven is rotary kiln, shaft furnace or microwave oven.
Further, preferably, described two-stage calcination stove is shaft furnace, chain-type sintering furnace, pot type sintering oven or tunnel furnace.
Principle of the present utility model is that two processes (intensification is anhydrated and reduction volatilization process) that ore roasting should be experienced positively are come respectively, links and carry out in different secondary reformers.
It is all feasible that the utility model uses any type of furnace to complete one section of roasting, any type of furnace comprises rotary kiln, shaft furnace, microwave oven etc., the high temperature material of one section of stoving oven is accepted on two-stage calcination stove linkage ground, carry out secondary coal, air intake is rapidly heated after roasting and comes out of the stove, two-stage calcination stove can adopt shaft furnace, chain-type sintering furnace, pot type sintering oven, tunnel furnace etc.
The utility model is dealt with problems: a) solve high-moisture to shaft furnace processing safety potential problem; B) the volatilization collection problem that conventional shaft roasting cannot reach volatile constituent is solved; C) the ring formation problem using rotary kiln baking at high temperature restive to high ferro material is solved; D) large-scale kiln production unit is made can to maintain a long-term stability production.
The utility model two-stage calcination stove should adopt mode that is small-sized, multiple and standby boiler to produce, and object is the continuity ensureing to produce, and reduces the repair time of the equipment that is out of order.
The utility model system is adapted to the reduction of various ore and the baked for producing line of volatilization needs.This production system can use in the multiple ore industry of roasting requirement, and ore and other material proportion are determined by ore properties.
compared with prior art, its beneficial effect is the utility model:
(1) the utility model ensure that large-scale shaft furnace can be produced steadily in the long term, can not be subject to the impact of ring formation;
(2) two-stage calcination stove adopts miniaturization and standby boiler mode, the node easily gone wrong is had the mechanism of putting on record of quick solution and Rapid-Repair;
(3) the utility model high-temperature roasting can adopt the different baking modes except shaft furnace to carry out, to adapt to the roasting requirement of different ore;
(4) the utility model be used alone compared with rotary kiln more energy-conservation, more environmental protection;
(5) the utility model is compared with conventional shaft furnace, not only maintains the advantage that shaft furnace is energy-efficient, has also supplied its short slab;
(6) the utility model adopts staging treating, and advantage is:
A) solve two sections of flow process air inputs and require different problems;
B) problem of shaft furnace bottoms material pelletizing surface carbon content deficiency is solved;
C) problem that volatile element cannot volatilize in shaft furnace is solved;
D) the good reductibility of iron is ensured.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model two-stage calcination method ore reduction volatilization interlock production system;
Wherein, 1, one section of stoving oven; 2, two-stage calcination stove; 3, a section feeding mouth; 4, feed system; 5, steam cooling and smoke processing system; 6, flue is discharged; 7, one section of discharge system; 8, high-temp. furnace material transfer system; 9, two section feeding mouths; 10, primary reformer inlet system; 11, dust and volatile matter gathering system; 12, two sections of discharge systems; 13, secondary reformer enters coal inlet system.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail.
It will be understood to those of skill in the art that the following example only for illustration of the utility model, and should not be considered as limiting scope of the present utility model.Unreceipted concrete technology or condition person in embodiment, according to the technology described by the document in this area or condition or carry out according to product description.The unreceipted production firm person of material therefor, instrument or equipment, being can by buying the conventional products obtained.
As shown in Figure 1, two-stage calcination method ore reduction volatilization interlock production system, comprises one section of stoving oven 1 and two-stage calcination stove 2;
One section feeding mouth 3 place of one section of described stoving oven 1 is provided with feed system 4, and the top of one section of stoving oven 1 cools with steam and the inlet end of smoke processing system 5 is connected, and the outlet side of steam cooling and smoke processing system 5 is connected with discharge flue 6; Steam cooling and smoke processing system 5 are by one section of stoving oven 1 expellant gas after treatment, emptying by discharge flue 6;
The bottom of one section of described stoving oven 1 is provided with one section of discharge system 7, high-temp. furnace material transfer system 8 is provided with immediately below one section of described discharge system 7, by high-temp. furnace material transfer system 8, high-temp. furnace material is shifted, and be added to two-stage calcination stove 2 from two section feeding mouths 9;
One section of described discharge system 7 is connected with two-stage calcination stove 2 with dust and volatile matter gathering system 11 by primary reformer inlet system 10 successively; The gas obtained after the dust that two-stage calcination stove 2 produces and volatile matter are processed by dust and volatile matter gathering system 11, enters in one section of stoving oven 1 through primary reformer inlet system 10.
Be provided with two sections of discharge systems 12 bottom described two-stage calcination stove 2, secondary reformer enters coal inlet system 13 and is connected with two sections of discharge systems 12.Secondary reformer enters coal inlet system 13 for two-stage calcination stove 2 provides sufficient air, and supplies required coal dust.
Preferred version is the two-stage calcination stove 2 comprising multiple parallel connection, is connected after multiple two-stage calcination stove 2 is in parallel by dust and volatile matter gathering system 11 with primary reformer inlet system 10.
Described one section of stoving oven 1 is rotary kiln, shaft furnace or microwave oven.
Described two-stage calcination stove 2 is shaft furnace, chain-type sintering furnace, pot type sintering oven or tunnel furnace.
Certain following production engineering is that example will be further described the utility model, but protection domain of the present utility model is not by the restriction of these examples.
For two sections of shaft roastings, one section of stoving oven 1 adopts internal diameter 5.8m, the shaft furnace that stove is high 12 meters, as agglomerating plant, day process ore amount is about 1000 tons, if only require, it completes the intensification function that dewaters, for two-stage calcination stove 2(shaft furnace) the hot pelletizing feed of about 600 DEG C is provided, its throughput can bring up to more than 1300 tons, and this shaft furnace will can not degenerate and other stove safety problem in the face of ring formation, the working of a furnace for a long time, ensure that this shaft furnace can steady in a long-termly run.
Two-stage calcination stove 2 adopts two 2.8 meters of internal diameters, the shaft furnace that stove is high 4 meters, accept the high temperature pelletizing that one section of shaft furnace provides, employing secondary coal, high air quantity roasting method, makes pelletizing be rapidly heated to the temperature of ore reduction volatilization requirement, at shaft furnace middle and lower part cooling discharge, drop temperature controls more than 400 DEG C, to ensure that ring formation not easily produces.
For volatile metal as plumbous zinc indium etc., at one section of stoving oven 1(shaft furnace) temperature rise period, major part metal is at experience 800-900 DEG C of high temperature, reach good reduction, just because first paragraph shaft furnace top material is low-temperature material, metal volatile is suppressed, and only enters in two-stage calcination stove with pelletizing.
Two-stage calcination stove 2(shaft furnace) adopt the operation of secondary coal, improve the reduction efficiency of iron and other material, improve the yield of volatile material.The high temperature provided in two-stage calcination stove 2 and strongly reducing atmosphere, keep fire door temperature more than 600 DEG C, this part metal is volatilized fast, and iron and other metals are also well reduced simultaneously.Again because adopt improve shaft roasting equipment, adding of bottom coal dust makes two-stage calcination stove 2(shaft furnace) bottom can remain to strongly reducing atmosphere, add heat material quick tapping and cool fast, all will the good iron of reduction and other metals be made to avoid secondary oxidation.Make the reduction volatilization of ore can reach good effect thus.
More than show and describe ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. two-stage calcination method ore reduction volatilization interlock production system, is characterized in that, comprise one section of stoving oven (1) and two-stage calcination stove (2);
One section feeding mouth (3) place of one section of described stoving oven (1) is provided with feed system (4), the top of one section of stoving oven (1) cools with steam and the inlet end of smoke processing system (5) is connected, and the outlet side of steam cooling and smoke processing system (5) is connected with discharge flue (6);
The bottom of one section of described stoving oven (1) is provided with one section of discharge system (7), high-temp. furnace material transfer system (8) is provided with immediately below one section of described discharge system (7), by high-temp. furnace material transfer system (8), high-temp. furnace material is shifted, and be added to two-stage calcination stove (2) from two section feeding mouths (9);
One section of described discharge system (7) is connected with two-stage calcination stove (2) with dust and volatile matter gathering system (11) by primary reformer inlet system (10) successively;
Described two-stage calcination stove (2) bottom is provided with two sections of discharge systems (12), and secondary reformer enters coal inlet system (13) and is connected with two sections of discharge systems (12).
2. two-stage calcination method ore reduction volatilization interlock production system according to claim 1, it is characterized in that, comprise the two-stage calcination stove (2) of multiple parallel connection, be connected with primary reformer inlet system (10) by dust and volatile matter gathering system (11) after multiple two-stage calcination stove (2) is in parallel.
3. two-stage calcination method ore reduction according to claim 1 volatilization interlock production system, is characterized in that, one section of described stoving oven (1) is rotary kiln, shaft furnace or microwave oven.
4. two-stage calcination method ore reduction according to claim 1 volatilization interlock production system, is characterized in that, described two-stage calcination stove (2) is shaft furnace, chain-type sintering furnace, pot type sintering oven or tunnel furnace.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520170817.3U CN204661791U (en) | 2015-03-25 | 2015-03-25 | Two-stage calcination method ore reduction volatilization interlock production system |
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| CN201520170817.3U CN204661791U (en) | 2015-03-25 | 2015-03-25 | Two-stage calcination method ore reduction volatilization interlock production system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354259A (en) * | 2017-08-03 | 2017-11-17 | 江苏省冶金设计院有限公司 | A kind of coal-based direct reduction shaft furnace and the method smelted using the shaft furnace |
| CN109686971A (en) * | 2018-12-12 | 2019-04-26 | 无锡晶石新型能源股份有限公司 | A kind of production method and production rotary kiln of nickelic polynary positive pole material |
| CN113122703A (en) * | 2021-04-13 | 2021-07-16 | 湖南省中晟环装科技有限公司 | Device and method for integrated treatment of sulfate slag through dearsenification, dezincification and reduction roasting |
-
2015
- 2015-03-25 CN CN201520170817.3U patent/CN204661791U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354259A (en) * | 2017-08-03 | 2017-11-17 | 江苏省冶金设计院有限公司 | A kind of coal-based direct reduction shaft furnace and the method smelted using the shaft furnace |
| CN109686971A (en) * | 2018-12-12 | 2019-04-26 | 无锡晶石新型能源股份有限公司 | A kind of production method and production rotary kiln of nickelic polynary positive pole material |
| CN113122703A (en) * | 2021-04-13 | 2021-07-16 | 湖南省中晟环装科技有限公司 | Device and method for integrated treatment of sulfate slag through dearsenification, dezincification and reduction roasting |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20180325 |
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| CF01 | Termination of patent right due to non-payment of annual fee |