CN101144121A - Solid blowing in method for fused bath smelting - Google Patents
Solid blowing in method for fused bath smelting Download PDFInfo
- Publication number
- CN101144121A CN101144121A CNA2007100501857A CN200710050185A CN101144121A CN 101144121 A CN101144121 A CN 101144121A CN A2007100501857 A CNA2007100501857 A CN A2007100501857A CN 200710050185 A CN200710050185 A CN 200710050185A CN 101144121 A CN101144121 A CN 101144121A
- Authority
- CN
- China
- Prior art keywords
- coke
- solid
- blow
- bed
- blowing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a solid blow-on method for non ferrous metal smelting side blowing molten pool smelting. During the blow-on of a molten pool smelting furnace, the molten pool is produced in the following procedures: the furnace is baked, and the furnace baking process is divided into furnace baking with small fire first, then moderate fire, and finally big fire; lumber and bed coke are charged, and the bed coke is charged in batches; solid material is charged, when the coke in the furnace cavity is completely red hot, solid slag material is charged and appropriate air blowing is performed, the molten mass flows downwards and then delaminates in the furnace cavity; the coke is charged. The solid blow-on method has the advantages that the blow-on time is short, and the transition to the molten pool smelting is rapid; the fuel consumption is low, and the expense is low; the operation is simple, and the present invention is suitable for all the initial blow-on of molten pool smelting; the formed molten mass has high temperature, etc.
Description
Technical field
The present invention relates to the solid blowing in method of the bath smelting furnace in a kind of non-ferrous metal pyrometallurgical smelting field, especially a kind of blow-in method of oxygen-enriched side-blowing bath smelting furnace.
Background technology
At present, two kinds of method blow-ons of the general employing of non-ferrous metal metallurgy side-blowing bath melting, a kind of is to pour into the melt blow-on, another kind is to use solid blowing.In these two kinds of methods, first kind is with the melt of a smelting furnace output of the working transportation equipment of packing into, then the fusion melt is poured in the burner hearth that needs blow-on, finishes the molten bath process of making.Second kind is that the small amount of solid material is placed the burner hearth that needs blow-on, with the spray gun burned flame winding-up solid materials of fuel such as Sweet natural gas, with material melting and reaction, until fusing fully, add the small amount of solid material then, again with it winding-up fusing, so constantly winding-up forms up to the molten bath.
These two kinds of methods have following deficiency:
(1) first method is under the situation that does not have melt to add, and is invalid to the blow-on of newly-built bath smelting furnace.
(2) second method need be equipped with resistant to elevated temperatures spray gun and place stove, and burn-off rate is slow, and the blow-on time is long, and needs a large amount of fuel of burning.
Summary of the invention
The objective of the invention is to provide a kind of blow-on time short, can carry out the transition to bath smelting rapidly, fuel consumption is few, is fit to the solid blowing in method of the initial blow-on of most of side-blowing bath meltings.
The technical solution used in the present invention is:
When the bath smelting furnace blow-on, adopt following program to make the molten bath:
(1) baker, baker process divide little fire, moderate heat, back big fire baker earlier;
(2) throw timber and bed coke, bed coke will add in batches;
(3) throw the solid material, the complete red heat of coke in burner hearth begins to add solid slag and suitably air blast, back layering in burner hearth under the melt-flow;
(4) throw coke.
Dropping into the bed coke amount is 650～950 kilograms/meter
2Bed surface is long-pending, and bed coke adds in batches.
Add about 2000 kilograms/hour of solid slag amount. rice
2Bed surface is long-pending, when dropping into solid slag, begins increasing and blasts air quantity, and air quantity is about 650 cubic metres/hour. rice
2Bed surface is long-pending, and oxygen is dense to be increased to normal smelting requirements gradually.
When melt pool height is about to reach computed altitude, drops into coke and guarantee that solid materials melts fully.
The solid blowing in method of bath smelting of the present invention has the following advantages:
(1) blow-on time weak point can carry out the transition to bath smelting rapidly; From dropping into firewood and bed coke to forming the molten bath, about 12 hours;
(2) fuel consumption is few, and expense is low;
(3) simple to operate, be suitable for the initial blow-on of most of side-blowing bath meltings;
(4) formed melt temperature height.
Description of drawings
Fig. 1 is a side-blowing bath smelting furnace cupola well sectional view.
From accompanying drawing as can be seen, the flat part in the right is main air blast zone, after melt generates, because the gravity relation can flow to the left side from the right along the direction of arrow, is elevated to left side melt-flow outlet until melt.Because cupola well is more shallow, the molten bath forms easily, and separate at the position darker in the left side of the melt after the formation, forms matte and slag, can get the lower slag of cupric after external crucible is clarified once more.
Embodiment
The concrete steps of the inventive method are:
(1) baker.Heat up during baker and must evenly slowly with little fire baking, use moderate heat gradually earlier, final stage adopts big fire roasting.
(2) throw timber and bed coke.Continue to throw timber in stove, timber will vertically evenly drop in the stove along stove, general throw to more than the air port about one meter till.This section is natural ventilation.Treat timber comprehensively burning vigorous in, can drop into bed coke in batches.In order to guarantee enough end temperature, unlikely again generation gas explosion, when adding bed coke, should note following some: 1. the bed coke add-on is suitable, can not be too much, gas explosion too much takes place easily; Can not be very few, temperature of the very few end is not enough.According to my company's production practice, the bed coke amount should not be above 1000 kilograms/meter
2Bed surface is long-pending, with 650～950 kilograms/meter
2Bed surface is long-pending more suitable.2. bed coke must add in batches, and will add the next batch bed coke when flame fully burns, and is as the criterion to push down flare, makes CO that be arranged sufficient combustion time.Still do not blow in when 3. adding bed coke, adopt natural ventilation.If burner hearth is darker, then suitably logical little wind guarantees the perfect combustion of coke.
(3) throw the solid material.The complete red heat of coke in burner hearth begins to add the solid slag (containing a certain proportion of coke, slag, blowing slag, matte and small amount of limestone) of 30～80mm, about 2000 kilograms/hour of the add-on of slag charge. rice
2Bed surface is long-pending more suitable.Solid slag adds total amount and is as the criterion with calculating, and target is to reach the melt pool height that needs.When dropping into solid slag, begin increasing and blast air quantity, air quantity is about 650 cubic metres/hour. rice
2Bed surface is long-pending more suitable, and oxygen is dense to be increased to normal smelting requirements gradually.Solid slag is reaction rapidly under hot conditions, and the temperature of tuyere zone is about about 1500 ℃, and the back is divided into matte layer and slag blanket under the melt-flow in burner hearth.
(4) throw coke.When melt pool height is about to reach computed altitude, drops into coke and guarantee that solid materials all melts.Melt pool height is determined by measuring the deslagging pond melt height that is communicated with burner hearth.
(5) throw this material.When melt pool height reaches the Theoretical Calculation height, finish the molten bath process of making.After cause in the molten bath, adjust air quantity, oxygen is dense and relevant metallurgical parameter, enters normal smelting process.
A cross-sectional area is studied and built up in my company voluntarily is 7.35m
2The side-blowing bath smelting furnace, from producing ordinary production as a trial, blow-on is three times altogether, inferior all successfully.With on June 5th, 2007 the blow-on process be example, concrete blow-on process is as follows:
1, gets the raw materials ready
(1) calculates
Calculate needed inventory according to the condition of this trial production, and perform the trial sheet scheme.Each step all performs associated note.Blow-on batch of material amount is as shown in table 1.
Table 1 batch of material and batch table
| Reinforced lot number | Coke | Slag | Matte | The blowing slag | Wingdale |
| kg | kg | kg | kg | kg | |
| Bed coke | 6000 | ||||
| Batch of material amount (totally 19 batches) | 310 | 400 | 1200 | 400 | 51 |
(2) adjust the blanking belt speed
Produce this as a trial needed material intermediate bin of packing into, regulate the rotating speed of the weighing belt of each material simultaneously, reach the blanking requirement.
2, make the molten bath
Finish to making the molten bath from baker, need 12 hours 25 minutes altogether, detailed process is as shown in table 2.
Table 2 solid blowing is made molten bath charging time and correlation parameter table
| Time | Feeding sequence | Air quantity m 3/h | Oxygen purity % | Secondary air flow m 3/h | Blast MPa |
| 8:00 | Begin to drop into firewood | ||||
| 9:00 | 6 tons of 9:10-12:50 bed cokes | 0 | 21.9 | -15.8 | 0 |
| 10:00 | 0 | 21.9 | -15.8 | -0.01 | |
| 11:00 | 0 | 21.9 | -15.8 | 0 | |
| 12:00 | 3124 | 21.2 | -15.8 | 0.01 | |
| 13:00 | 15 batches of 13:08-14:15 slag charges | 4491 | 21.8 | -15.8 | 0.01 |
| 14:00 | 4864 | 26.3 | 3004 | 0.01 | |
| 15:00 | 2 batches of 15:18-15:24 slag charges | 4452 | 29.8 | 2977 | 0.01 |
| 16:00 | 3 batches of 16:08-16:24 slag charges | 4295 | 32.0 | 2923 | 0.01 |
| 17:00 | 4523 | 35.1 | 2115 | 0.01 | |
| 18:00 | Empty burnt 1 ton of 18:20 | 4530 | 34.9 | 2124 | 0.01 |
| 19:00 | 18:30 installs blanking cover plate 5 | 4665 | 35.1 | 2123 | 0.02 |
| 20:00 | 5018 | 42.1 | 2180 | 0.05 | |
| 21:00 | 21:25 throws this material | 5038 | 43.0 | 2182 | 0.05 |
3, make molten bath result and analysis
(1) makes the molten bath process and all in the time of formulating, finish, successfully enter normal productive process.
(2) making the measured draught temperature of molten bath process reaches more than 1500 ℃.
(3) fundamental cause of making the molten bath success is: drop into coke after dropping into timber, the slit between timber has guaranteed good ventilation condition, and coke and timber together burn, and a large amount of heats of burning generation are used for the melting solid slag charge.Because the solid slag complete in crystal formation, fusing easily in the process that falls, constantly absorbs coke burning liberated heat after fusing, form superheated melt.And coke density is less, floats gradually in melt, and is making under the continuous airy situation of molten bath later stage, this part coke in the melt is also burnt, therefore melt also becomes better thermal barrier, comes to life simultaneously, with the solid slag heat fused that adds later.Therefore, the time of making the molten bath is not long, and formed bath temperature is also higher, simultaneously, in order to guarantee the temperature in blow-on initial stage molten bath, heightens the water jacket leaving water temperature(LWT), improves water temperature difference, makes heat that water jacket takes away still less.
Through three blow-ons, all reached identical effect at every turn.The solid blowing that has proved bath smelting is successful a kind of method.
Claims (4)
1. the solid blowing in method of a bath smelting is characterized in that adopting following program to make the molten bath when the bath smelting furnace blow-on:
(1) baker, baker process divide little fire, moderate heat, back big fire baker earlier;
(2) throw timber and bed coke, bed coke will add in batches;
(3) throw the solid material, the complete red heat of coke in burner hearth begins to add solid slag and suitably air blast, back layering in burner hearth under the melt-flow;
(4) throw coke.
2. the solid blowing in method of bath smelting according to claim 1 is characterized in that: dropping into the bed coke amount is 650～950 kilograms/meter
2Bed surface is long-pending, and bed coke adds in batches.
3. the solid blowing in method of bath smelting according to claim 1 is characterized in that: add about 2000 kilograms/hour of solid slag amount. rice
2Bed surface is long-pending, when dropping into solid slag, begins increasing and blasts air quantity, and air quantity is about 650 cubic metres/hour. rice
2Bed surface is long-pending, and oxygen is dense to be increased to normal smelting requirements gradually.
4. the solid blowing in method of bath smelting according to claim 1 is characterized in that: when melt pool height is about to reach computed altitude, drops into coke and guarantee that solid materials melts fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100501857A CN101144121A (en) | 2007-09-26 | 2007-09-26 | Solid blowing in method for fused bath smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100501857A CN101144121A (en) | 2007-09-26 | 2007-09-26 | Solid blowing in method for fused bath smelting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101144121A true CN101144121A (en) | 2008-03-19 |
Family
ID=39206855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100501857A Pending CN101144121A (en) | 2007-09-26 | 2007-09-26 | Solid blowing in method for fused bath smelting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101144121A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417993A (en) * | 2011-08-08 | 2012-04-18 | 新鑫矿业股份有限公司喀拉通克铜镍矿 | Novel melting blow-in method of oxygen-rich side-blown molten pool |
| CN102634653A (en) * | 2012-05-22 | 2012-08-15 | 云南驰宏锌锗股份有限公司 | Side-blowing material-smelting production method |
| CN104357650A (en) * | 2014-10-31 | 2015-02-18 | 铜陵有色金属集团股份有限公司金昌冶炼厂 | Method for quickly creating molten bath for bath smelting |
| CN104894391A (en) * | 2015-06-10 | 2015-09-09 | 赤峰富邦铜业有限责任公司 | Cold metal blowing-in operation method of oxygen-enriched side-blown bath copper smelting process |
| CN106978535A (en) * | 2017-03-20 | 2017-07-25 | 云南驰宏锌锗股份有限公司 | A kind of blow-in method with waste heat boiler fuming furnace |
| CN109402381A (en) * | 2018-11-30 | 2019-03-01 | 白银有色集团股份有限公司 | A kind of method that furnace production is burnt in fluidized bed furnace blow-on |
| CN110749199A (en) * | 2019-11-06 | 2020-02-04 | 攀钢集团攀枝花钢铁研究院有限公司 | Furnace drying method for titanium-extracting electric furnace from titanium-containing blast furnace slag |
| CN111945012A (en) * | 2020-07-01 | 2020-11-17 | 中国恩菲工程技术有限公司 | Method for manufacturing molten pool in side-blown smelting furnace thermal state |
-
2007
- 2007-09-26 CN CNA2007100501857A patent/CN101144121A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417993A (en) * | 2011-08-08 | 2012-04-18 | 新鑫矿业股份有限公司喀拉通克铜镍矿 | Novel melting blow-in method of oxygen-rich side-blown molten pool |
| CN102634653A (en) * | 2012-05-22 | 2012-08-15 | 云南驰宏锌锗股份有限公司 | Side-blowing material-smelting production method |
| CN104357650A (en) * | 2014-10-31 | 2015-02-18 | 铜陵有色金属集团股份有限公司金昌冶炼厂 | Method for quickly creating molten bath for bath smelting |
| CN104894391A (en) * | 2015-06-10 | 2015-09-09 | 赤峰富邦铜业有限责任公司 | Cold metal blowing-in operation method of oxygen-enriched side-blown bath copper smelting process |
| CN104894391B (en) * | 2015-06-10 | 2017-02-08 | 赤峰富邦铜业有限责任公司 | Cold metal blowing-in operation method of oxygen-enriched side-blown bath copper smelting process |
| CN106978535A (en) * | 2017-03-20 | 2017-07-25 | 云南驰宏锌锗股份有限公司 | A kind of blow-in method with waste heat boiler fuming furnace |
| CN106978535B (en) * | 2017-03-20 | 2018-05-18 | 云南驰宏锌锗股份有限公司 | A kind of blow-in method with waste heat boiler fuming furnace |
| CN109402381A (en) * | 2018-11-30 | 2019-03-01 | 白银有色集团股份有限公司 | A kind of method that furnace production is burnt in fluidized bed furnace blow-on |
| CN109402381B (en) * | 2018-11-30 | 2020-08-14 | 白银有色集团股份有限公司 | Method for producing boiling furnace by blowing in and burning out |
| CN110749199A (en) * | 2019-11-06 | 2020-02-04 | 攀钢集团攀枝花钢铁研究院有限公司 | Furnace drying method for titanium-extracting electric furnace from titanium-containing blast furnace slag |
| CN110749199B (en) * | 2019-11-06 | 2021-10-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Furnace drying method for titanium-extracting electric furnace from titanium-containing blast furnace slag |
| CN111945012A (en) * | 2020-07-01 | 2020-11-17 | 中国恩菲工程技术有限公司 | Method for manufacturing molten pool in side-blown smelting furnace thermal state |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101144121A (en) | Solid blowing in method for fused bath smelting | |
| CN109182644A (en) | Alloy material baking furnace system after rotary distribution converter and operation method | |
| RU2482077C2 (en) | Cupola furnace and method of obtaining molten silica | |
| CN1017920B (en) | The melting metal waste stove | |
| CN102417993A (en) | Novel melting blow-in method of oxygen-rich side-blown molten pool | |
| CN107267746A (en) | The method and its device of a kind of lateritic nickel ore direct-reduction-top blow smelting production ferronickel | |
| CN114001549B (en) | Smelting furnace for smelting nickel matte and production method of low nickel matte | |
| CN104894391B (en) | Cold metal blowing-in operation method of oxygen-enriched side-blown bath copper smelting process | |
| EP0554022A2 (en) | Operation of vertical shaft furnaces | |
| CN108060283A (en) | A kind of blast furnace | |
| CN107460340A (en) | A kind of quick blow-in method of copper bottom-blown smelting stove | |
| CN105371653B (en) | A kind of vertical zinc oxide smelting furnace | |
| KR100866850B1 (en) | Modular apparatus for the production of molten metal | |
| KR100241854B1 (en) | How to operate vertically | |
| CN107400748A (en) | A kind of fusion reducing furnace and smelting reduction process | |
| CN204897955U (en) | Melt branch stove | |
| CN102168187A (en) | Bottom-blowing oxidation rough smelting technology for antimony ore and metallurgical furnace | |
| CN102168188B (en) | Antimony flotation concentrate flash oxidization primary refining production process and flash antimony metallurgical furnace | |
| CN208635556U (en) | Oxygen-enriched negative pressure smelting furnace | |
| US88480A (en) | Improvement in the manufacture of iron and steel | |
| CN108007201A (en) | A kind of cast raw material and the energy-saving environment-friendly furnace of coke segregated combustion | |
| CN2450219Y (en) | Blast furnace for iron-smelting and parkerising | |
| CN1234449A (en) | Quick-melting furnace and process thereof | |
| US3695601A (en) | Cupola | |
| RU2152436C2 (en) | Method of melting materials in molten-metal bath and furnace for realization of this method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080319 |