CN102003880A - Mineral calcining testing system - Google Patents
Mineral calcining testing system Download PDFInfo
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- CN102003880A CN102003880A CN2010106153483A CN201010615348A CN102003880A CN 102003880 A CN102003880 A CN 102003880A CN 2010106153483 A CN2010106153483 A CN 2010106153483A CN 201010615348 A CN201010615348 A CN 201010615348A CN 102003880 A CN102003880 A CN 102003880A
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- rotary kiln
- preheater
- burner
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- calcination
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Abstract
The invention relates to a mineral calcining testing system mainly comprising a preheater, a rotary kiln and a cooling bin, wherein a discharge opening arranged on the preheater is connected and communicated with one end of the rotary kiln through an obliquely arranged conveying channel; the discharge opening of the other end of the rotary kiln is connected with the cooling bin; a burner is arranged in the rotary kiln; and the burner is connected with a gas valve bank. The system can regulate and control the temperature of each process section through regulating the gas flow of the burner, the air flow and pressure of a combustion fan, the flow and pressure of a draught fan and the like; the time of each process section can be regulated and controlled through regulating the blanking frequency of a push rod of the preheater, the rotating speed of a barrel of the rotary kiln, the opening frequency of a discharge gate of the cooling bin and the like; the parameter measurement is easily realized on each mineral calcining link under the actual working condition through externally controlling the internal pressure and temperature of the system.
Description
Technical field
The invention belongs to the calcination of minerals processing technology field, relate to a kind of pilot system that various calcination of minerals are handled specifically.
Background technology
At present, in industries such as metallurgical, coloured, papermaking, there are every year a large amount of lime stones, dolomite, the smart sphere of powder of iron group etc. need carry out calcination processing, about 5,000 ten thousand tons of the annual need in the whole nation to the treating capacity of above various mineral, the only annual calcination of minerals system that increases newly just reaches 10～20, the mineralogical composition and the physical property of various places vary, and each enterprise also has nothing in common with each other to the requirement that calcination of minerals is handled.It is the thermal process of a complexity that materials such as the smart sphere of powder of lime stone, dolomite, iron group become active lime, light dolomite, acid pellet respectively through high-temperature calcination, existing physical change has chemical change again, how can make the calcining pilot system that adapts so that use in actual engineering design at different raw mineral materials and different processing requirements, be the key that improves the calcination of minerals production technology.
Before this, the calcination of minerals test is all carried out at the indoor Muffle furnace of test, and Muffle furnace is an enclosed housing, and material is put into the back and reached the calcining purpose by electrical heating intensification-insulating process.Mineral are calcined test and are belonged to static blocking test in Muffle furnace, do not have the work condition environment of actual production, therefore the various parameters of measuring ore calcination under actual condition that the test of the calcining in Muffle furnace can not be correct.
Summary of the invention
The objective of the invention is the deficiency for solving the problems of the technologies described above, a kind of calcination of minerals pilot system is provided, this system architecture is simple, can control internal system pressure, temperature, has realized that ore calcination under the actual condition tests the parameter measurement of each link.
The present invention is the deficiency that solves the problems of the technologies described above, the technical scheme that is adopted is: a kind of calcination of minerals pilot system, mainly constitute by preheater, rotary kiln, cooling storehouse, being arranged on discharge gate on the preheater is connected with an end of rotary kiln by the transfer passage that is obliquely installed and communicates, the other end discharging opening of rotary kiln is connected with the cooling storehouse, be provided with burner in the described rotary kiln, burner is connected with the gas valve group.
Also be provided with exhaust outlet on the described preheater, exhaust outlet links by pipeline and air-introduced machine, also is provided with deduster on the connecting line between exhaust outlet and the air-introduced machine.
Also be provided with the push rod that promotes mineral in the described preheater.
The invention has the beneficial effects as follows:
1, native system to the regulation and control of each procedure segment temperature can be by adjusting burner the air mass flow of gas flow, combustion fan and pressure, air-introduced machine flow and pressure wait and realize; The frequency that the regulation and control of each procedure segment time can be by adjusting the blanking of preheater push rod, the rotating speed of cylinder of rotary kiln, the frequency that cooling storehouse Dump gate is opened wait and realize; By external control system internal pressure, temperature, easily realize the parameter measurement of each link of ore calcination under the actual condition.
2, can obtain index through this system: the preference temperature of one, calcination of minerals and time are optimum temperature---time graph; Two, whether mineral explosion, efflorescence, bonding phenomenon can occur in above process; Three, whether the trace element in the mineral can separate out in above process; Four, whether the harmful element in the flue gas of fuel combustion generation can be adsorbed by mineral.Overcome conventional static blocking test fully.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Mark among the figure: 1, preheater, 2, charging aperture, 3, rotary kiln, 4, the cooling storehouse, 5, burner, 6, deduster, 7, air-introduced machine, 8, exhaust outlet, 9, the gas valve group, 10, transfer passage.
The specific embodiment
As shown in Figure 1, a kind of calcination of minerals pilot system, mainly constitute by preheater 1, rotary kiln 3, cooling storehouse 4, on preheater 1, be provided with charging aperture 2, the mineral material is The pre-heat treatment in charging aperture 2 is sent into preheater 1, being arranged on discharge gate on the preheater 1 is connected with an end of rotary kiln 3 by the transfer passage 10 that is obliquely installed and communicates, the other end discharging opening of rotary kiln 3 is connected with cooling storehouse 4, be provided with burner 5 in rotary kiln 3 and the end that links to each other of cooling storehouse 4, burner 5 is connected with the gas valve group 9 of outside.
Be provided with the transfer passage 10 that is obliquely installed in the native system, this kind structure has following advantage: be convenient to high-temperature gas in the rotary kiln and carry out heat exchange with gas in the preheater and realize warm, next helps mineral material after the The pre-heat treatment to enter to enter down in the rotary kiln to go on foot processing.
Also be provided with exhaust outlet 8 on the described preheater 1, exhaust outlet 8 links by pipeline and air-introduced machine 7, also is provided with deduster 6 on the connecting line between exhaust outlet 8 and the air-introduced machine 7.It mainly acts on is to discharge along the air-introduced machine pipeline after deduster filters handling the waste hot gas that produces in the mineral process.
The burner that is provided with in this system 5 is a fuel with coal gas, also is provided with the combustion fan that is connected with burner 5.On intrasystem preheater, cooling storehouse, waste discharge feed channel, thermometer and pressure gauge are installed all, be reflected on the operating desk by line by a plurality of thermometrics (T), pressure measurement (P) instrument, then externally adopt hand-held infrared radiation thermometer to detect calcining heat at any time rotary kiln.
In preheater 1, also be provided with the Electrohydraulic push rod that promotes material, the mineral of promotion after The pre-heat treatment enter rotary kiln, and can pound the door by frequency, the rotating speed of cylinder of rotary kiln, the cooling storehouse discharging of adjusting the blanking of the preheater push rod frequency of opening of the regulation and control of each procedure segment time waits and realizes; The air mass flow of gas flow, combustion fan and pressure, air-introduced machine flow and pressure that can be by adjusting burner to the regulation and control of procedure segment temperature wait and realize.
Workflow is as follows: the mineral of normal temperature at first are admitted in the preheater, the high-temperature gas that transmits with rotary kiln carries out heat exchange realization warm, mineral are preheating to certain temperature and through suitable insulation, this moment, mineral had the part decomposition, in time promote mineral according to the Electrohydraulic push rod on the test requirements document preheater and enter rotary kiln, mineral progressively flow to low side from high-end constantly rolling in rotary kiln, the realization high-temperature calcination contacts with high-temperature gas that burner produced that is installed in the rotary kiln other end and flame reverse flow.Mineral after the calcining enter cooling in the taper cooling storehouse, and mineral are cooled to the following back of uniform temperature on request and discharge the cooling storehouse.The waste gas that preheater is discharged is sent to Low-Pressure Pulse Bag Filter and carries out dedusting, and waste gas enters atmosphere by air-introduced machine, chimney after filtering.
This pilot system can be handled multiple ores such as lime stone, dolomite, the smart sphere of powder of iron groups, and obtains various parameters.
Calcination of minerals pilot system of the present invention, the adaptation mineral granularity is 10～50mm, the highest calcining heat can reach 1400 ℃ in the rotary kiln.Mineral constantly roll in rotary kiln, and flue gas that burning produces and mineral decompose the gas that produces is discharged by air-introduced machine at any time, so calcination of minerals is even, thorough.Can be by simulation calcining to various mineral in preheating---cooling procedure is made following evaluation in insulation---calcining---:
The preference temperature of one, calcination of minerals and time are optimum temperature---time graph;
Two, whether mineral explosion, efflorescence, bonding phenomenon can occur in above process;
Three, whether the trace element in the mineral can separate out in above process;
Four, whether the harmful element in the flue gas of fuel combustion generation can be adsorbed by mineral.
Claims (3)
1. calcination of minerals pilot system, it is characterized in that: mainly constitute by preheater (1), rotary kiln (3), cooling storehouse (4), being arranged on discharge gate on the preheater (1) is connected with an end of rotary kiln (3) by the transfer passage (10) that is obliquely installed and communicates, the other end discharging opening of rotary kiln (3) is connected with cooling storehouse (4), be provided with burner (5) in the described rotary kiln (3), burner (5) is connected with gas valve group (9).
2. a kind of calcination of minerals pilot system according to claim 1, it is characterized in that: described preheater also is provided with exhaust outlet on (1), exhaust outlet links to each other with air-introduced machine (7) by pipeline, also is provided with deduster (6) on the connecting line between exhaust outlet and the air-introduced machine (7).
3. a kind of calcination of minerals pilot system according to claim 1 is characterized in that: also be provided with the push rod that promotes mineral in the described preheater (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106153483A CN102003880A (en) | 2010-12-30 | 2010-12-30 | Mineral calcining testing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106153483A CN102003880A (en) | 2010-12-30 | 2010-12-30 | Mineral calcining testing system |
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| CN102003880A true CN102003880A (en) | 2011-04-06 |
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| CN2010106153483A Pending CN102003880A (en) | 2010-12-30 | 2010-12-30 | Mineral calcining testing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148703A (en) * | 2013-03-13 | 2013-06-12 | 莱芜钢铁集团有限公司 | Experimental device for simulating reduction of rotary hearth furnace |
| CN103305689A (en) * | 2013-07-11 | 2013-09-18 | 中信重工机械股份有限公司 | Pellet preheating and drying test device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1515745A (en) * | 1974-07-29 | 1978-06-28 | Fives Cail Babcock | Method of cooling cement clinker with recovery of heat and installation for carrying out the same |
| CN1149034A (en) * | 1996-03-06 | 1997-05-07 | 赵静山 | Cement production system and raw meal calcining process with fluid pre-heating decompositing and electric power generating by remaining heat |
| CN2661689Y (en) * | 2003-08-15 | 2004-12-08 | 中信重型机械公司 | Novel principal machine equipment for producing active lime |
| CN101196370A (en) * | 2006-12-08 | 2008-06-11 | 洛阳中合祥水泥有限公司 | Novel combined cement clinker roasted and waste heat generation system and technique |
| CN201254529Y (en) * | 2008-09-01 | 2009-06-10 | 黄新春 | Cement clinker calcination system |
| CN201926302U (en) * | 2010-12-30 | 2011-08-10 | 中信重工机械股份有限公司 | Mineral calcination testing system |
-
2010
- 2010-12-30 CN CN2010106153483A patent/CN102003880A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1515745A (en) * | 1974-07-29 | 1978-06-28 | Fives Cail Babcock | Method of cooling cement clinker with recovery of heat and installation for carrying out the same |
| CN1149034A (en) * | 1996-03-06 | 1997-05-07 | 赵静山 | Cement production system and raw meal calcining process with fluid pre-heating decompositing and electric power generating by remaining heat |
| CN2661689Y (en) * | 2003-08-15 | 2004-12-08 | 中信重型机械公司 | Novel principal machine equipment for producing active lime |
| CN101196370A (en) * | 2006-12-08 | 2008-06-11 | 洛阳中合祥水泥有限公司 | Novel combined cement clinker roasted and waste heat generation system and technique |
| CN201254529Y (en) * | 2008-09-01 | 2009-06-10 | 黄新春 | Cement clinker calcination system |
| CN201926302U (en) * | 2010-12-30 | 2011-08-10 | 中信重工机械股份有限公司 | Mineral calcination testing system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148703A (en) * | 2013-03-13 | 2013-06-12 | 莱芜钢铁集团有限公司 | Experimental device for simulating reduction of rotary hearth furnace |
| CN103305689A (en) * | 2013-07-11 | 2013-09-18 | 中信重工机械股份有限公司 | Pellet preheating and drying test device |
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Application publication date: 20110406 |