CN208562168U - A kind of system and device preparing more specification light calcined magnesias - Google Patents
A kind of system and device preparing more specification light calcined magnesias Download PDFInfo
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Abstract
A kind of system and device preparing more specification light calcined magnesias, belongs to inorganic non-metallic material processing technique field.The system and device, including drying unit, switch unit, roasting unit, depth cooling unit and fuel supply unit；Drying machine, the first switching valve, roasting unit, third switching valve and drying machine wind path form the wind path circulation of the drying machine of drying unit；Drier, the second switching valve, roasting unit, the 4th switching valve and drier wind path form the wind path circulation of the drier of drying unit；The discharge port of roasting unit is connected with the feed inlet of depth cooling unit, and the air outlet of depth cooling unit is connected with the air inlet of fuel supply unit, and the air outlet of fuel supply unit is connected with the third switching valve air inlet of switch unit.The arrangement achieves " furnace are multi-functional ", meet market diversification demand, reduce energy consumption, save capital expenditure, reducing production cost and increase economic efficiency.
Description
Technical field
The utility model belongs to inorganic non-metallic material processing technique field, and in particular to a kind of to prepare the light-burned oxygen of more specifications
Change the system and device of magnesium.
Background technique
Light calcined magnesia is important strategic materials, has been widely used for metallurgy, building materials, building (decoration) environmental protection, electricity
The fields such as work electronics and space flight and aviation.
The roasting technique that China prepares light calcined magnesia is multifarious, and there is reflecting kiln, rotary kiln, multihearths in the market
With a variety of roasting techniques such as shower furnace, 15,000,000 tons of annual capacity or more, wherein the generally existing heat consumption of first three roasting technique is high
The shortcomings that (light calcined magnesia per ton consumes standard coal 260kg), though shower furnace is completed three sets, since technical solution does not conform to
Reason, there are no investment commercial operations so far, and can only produce single variety, are unable to satisfy the demand of market diversification.For this purpose, such as
What novel, efficient, energy-saving and environment-friendly technology and equipment of exploitation, carries out the reform of magnesite industry supply side, is each magnesite science and technology
One of the important topic that worker faces.
Utility model content
The purpose of this utility model be to overcome the shortcomings of in existing light calcined magnesia technology of preparing, provide it is a kind of prepare it is more
The system and device of specification light calcined magnesia is realized " furnace is multi-functional ", is met market diversification demand, is reduced energy consumption, saves base
Investment is built, production cost is reduced and increases economic efficiency.
To achieve the above object, the utility model provides a kind of system and device for preparing more specification light calcined magnesias, specifically
Technical solution is as follows:
A kind of system and device preparing more specification light calcined magnesias, comprising: drying unit, switch unit, roasting unit are deep
Spend cooling unit and fuel supply unit；
The drying unit, including drying machine and drier；
The switch unit, including the first switching valve, the second switching valve, third switching valve and the 4th switching valve；
Wherein, the dryer outlet mouth of the drying unit is connected with the first switching valve air inlet of switch unit,
First switching valve air outlet of switch unit is connected with the air inlet of roasting unit, the air outlet and switch unit of roasting unit
Third switching valve air inlet be connected, the dryer entrance mouth phase of the third switching valve air outlet and drying unit of switch unit
Connection, whole process form the wind path circulation of the drying machine of drying unit；
The drier air outlet of the drying unit is connected with the second switching valve air inlet of switch unit, and switching is single
Second switching valve air outlet of member is connected with the air inlet of roasting unit, and the 4th of the air outlet of roasting unit and switch unit the
Switching valve air inlet is connected, and the 4th switching valve air outlet of switch unit is connected with the drier air inlet of drying unit,
Whole process forms the wind path circulation of the drier of drying unit；
The discharge port of roasting unit is connected with the feed inlet of depth cooling unit, the air outlet of depth cooling unit and combustion
Expect the air inlet connection of supply unit, the air outlet of fuel supply unit is connected with the third switching valve air inlet of switch unit
It connects；
The drying machine of the drying unit is additionally provided with dry machine inlet；The drier of the drying unit is also set
It is equipped with dryer feed mouth；The roasting unit is additionally provided with dust-laden exhaust gas air outlet；The depth cooling unit is also set
It is equipped with surrounding air air inlet and outlet for product.
The drying machine of the drying unit preferably breaks up dryer；
The drier of the drying unit is preferably venturi drier；
In the switch unit, switching valve can be electric brake plate valve, Pneumatic gate valve or electric hydraulic gate valve, preferentially
Select electric hydraulic gate valve；
The roasting unit, including suspension separator, suspended preheater, suspension roaster, the first outstanding air cooler, the
Two outstanding air coolers and third hang air cooler, and each equipment is sequentially connected by liquid-filled pipe；
The depth cooling unit, including deep cooler, cooling blower and deduster pass through load between each equipment
Flow tube road is sequentially connected；
Fuel in the fuel supply unit is one of gaseous fuel, liquid fuel or solid fuel.
The drying machine inlet of the drying unit is connected with the discharge port of ore dressing powder supplied materials；The drying unit
Dryer feed mouth be connected with the discharge port of pulp supplied materials.
The air outlet of the fuel supply unit is connected with the third switching valve air inlet of switch unit, specially fires
The fuel outlet of material supply unit is connected with the third switching valve air inlet of switch unit.
The air inlet of the deep cooler of the depth cooling unit is connected with surrounding air air inlet.
A kind of method preparing more specification light calcined magnesias of the utility model, is utilized above-mentioned system and device, including
Following steps:
Step 1, switch
According to the difference of raw material, setting prepares the switching valve of switch unit in the system and device of more specification light calcined magnesias
Switch, so that the preparation of more specification light calcined magnesias is carried out, specifically:
(1) when raw material is ore dressing powder, the first switching valve and third switching valve of switch unit are opened, closes the second switching
Valve and the 4th switching valve, are dried using the drying machine of drying unit；
(2) when raw material is pulp, the second switching valve and the 4th switching valve are opened, the first switching valve is closed and third is cut
Valve is changed, is dried using the drier of drying unit；
Step 2, dry
According to the difference of raw material, drying is divided into following two situation:
(1) ore dressing powder is added to the drying machine of drying unit, is broken up through drying machine, and is sufficiently exchanged heat with drying hot gas, is selected
After miberal powder drying, the drying machine gas after being dried and the ore dressing powder material after drying, the ore dressing powder material after drying is with baking
Drying machine gas after dry, enters roasting unit by the first switching valve of switch unit；
Wherein, the drying hot gas of the drying machine of drying unit is the combustion of the roasting waste heat of roasting unit and the supply unit that burns
Expect the mixing hot gas of heat；The temperature of the drying hot gas is 500~700 DEG C, mixes hot gas through third switching valve and enters drying
Machine air inlet；
The mixing temperature of the ore dressing powder material after drying machine gas and drying after the drying is 120~170 DEG C；
Ore dressing powder material after the drying, mass percent≤1% of moisture content of drying base；
(2) pulp is added to the drier of drying unit, is sufficiently exchanged heat with the roasting waste heat gas of roasting unit, dry mine
After powder drying, the drier gas after being dried and the dry mine powder material after drying, the dry mine powder material after drying is with drying
Drier gas afterwards enters roasting unit by the second switching valve of switch unit；
Wherein, the temperature of the roasting waste heat gas of the roasting unit is 300~500 DEG C, more than the roasting of roasting unit
Hot gas enters drier air inlet through the 4th switching valve；
The mixing temperature of the dry mine powder material after drier gas and drying after the drying is 170~220 DEG C；
Dry mine powder material after the drying, mass percent≤1% of moisture content of drying base；
Step 3, it roasts
It is obtained into the gas after the drying of roasting unit and the material after drying by separation, preheating, roasting and cooling
To thermal material and dust-laden exhaust gas, after dust-laden exhaust gas enters the processing of conventional purification system, dust content≤10mg/Nm3Exhaust gas row
Sky, thermal material enter depth cooling unit；Wherein, the temperature of the thermal material is 150~200 DEG C；
Step 4, depth is cooling
After thermal material enters depth cooling unit, after carrying out heat exchange with surrounding air, obtain light calcined magnesia and changing
Hot-air, heat exchange air send combustion-supporting to burning supply unit, wherein thermal material is resulting after the processing of depth cooling unit
Temperature≤80 DEG C of light calcined magnesia, resulting heat exchange air themperature≤80 DEG C.
In the step 1 (1), the ore dressing powder is concentrate powder or mine tailing.
In the step 1 (1), the mass percent 8~15% of the moisture content of drying base of concentrate powder in the ore dressing powder,
Granularity is that -200 mesh account for 70~80%, ingredient are as follows: MgO >=47.1%, SiO2For 0.2 ± 0.05%, CaO be 0.5 ±
0.05%, Fe2O3For 0.28 ± 0.05%, Al2O3For 0.02 ± 0.01%, P2O5It is 0.07 ± 0.01%.
In the step 1 (1), the mass percent 12 of the moisture content of drying base of mine tailing in the ore dressing powder~
19%, granularity is that -200 mesh account for 75~85%, ingredient are as follows: MgO >=44.3%, SiO2For 5.05 ± 0.05%, CaO 1.19
± 0.05%, Fe2O3For 0.72 ± 0.05%, Al2O3For 0.11 ± 0.05%, P2O5It is 0.1 ± 0.01%.
In the step 1 (1), the mass percent 3~5% of the moisture content of drying base of the pulp, granularity be-
200 mesh account for 65~75%, ingredient are as follows: MgO >=41%, SiO2It is 3.0 ± 0.05% for 3.5 ± 0.05%, CaO.
In the step 2 (1), roasting suspended preheater of the waste heat from roasting unit of the roasting unit gives up
Gas.
In the step 2 (1), burning that the fuel heat of the burning supply unit is generated from fuel supply unit
Product.
In the step 2 (2), the roasting waste heat gas of the roasting unit is the suspended preheater of roasting unit
Exhaust gas.
It is described to be separated into the gas and object after drying by the suspension separator of roasting unit in the step 3
Material separation, material enter suspended preheater and are preheated, and gas a part empties after entering the processing of conventional purification system, a part
It sequentially enters third and hangs air cooler, the second outstanding air cooler, the first outstanding air cooler, suspension roaster heated.
In the step 3, the preheating is to utilize material by the suspended preheater of roasting unit to roast through suspending
The hot gas for burning furnace heating is preheated and is separated, and material enters suspension roaster and roasted, and it is laggard that hot gas enters switch unit
Enter drying unit, provides heat for dry materials.
In the step 3, described being roasted to roasts material by the suspension roaster of roasting unit, roasting
Material afterwards sequentially enters the first outstanding air cooler, the second outstanding air cooler, and third is hanged air cooler and cooled down.
In the step 3, the first outstanding air cooler being cooled to by roasting unit, the second outstanding air cooling
Device, third hang air cooler and cool down material, and the material after roasting enters depth cooling unit, and gas enters suspension roasting
Furnace.
In the step 3, the gas after the drying is the drying machine gas after drying or the drier after drying
Gas；Material after the drying is the ore dressing powder material after drying or the dry mine powder material after drying.
In the step 4, the thermal material enters the deep cooler of depth cooling unit, carries out with surrounding air
Heat exchange obtains light calcined magnesia product, and the gas of deep cooler separation, which enters after deduster is dusted, enters fuel confession
Answer unit.
In the step 4, the fuel supply unit, the combustion heat that combustion product generates enters switch unit
Third switching valve provides heat for drying machine.
A kind of system and device preparing more specification light calcined magnesias of the utility model, compared with existing production technology, this
The advantages of utility model effect are as follows:
The utility model prepares the system and device of more specification light calcined magnesias, and it is more to can use different magnesite powder production
Specification activated magnesia meets market needs, saves 80% or more capital expenditure, lowers 20% or more energy consumption, saving is produced into
Sheet 20%~25% improves automatization level, reduces occupied area, makes full use of magnesite resource, increase economic efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the system and device that the utility model prepares more specification light calcined magnesias；
1, drying unit: 1.1, drying machine, 1.2, drier, 2, switch unit: 2.1, the first switching valve, 2.2, second cuts
Change valve, 2.3, third switching valve, the 2.4, the 4th switching valve, 3, roasting unit；4, depth cooling unit, 5, fuel supply unit；
A, ore dressing powder, B, pulp, C, light calcined magnesia, D, dust-laden exhaust gas, E, surrounding air.
Specific embodiment
The utility model is described in further detail With reference to embodiment.
Embodiment 1
A kind of system and device preparing more specification light calcined magnesias, structural schematic diagram are shown in Fig. 1, comprising: drying unit 1,
Switch unit 2, roasting unit 3, depth cooling unit 4 and fuel supply unit 5；
The drying unit 1, including drying machine 1.1 and drier 1.2；
The switch unit 2, including the first switching valve 2.1, the second switching valve 2.2, third switching valve 2.3 and the 4th are cut
Change valve 2.4；
Wherein, 2.1 air inlet of the first switching valve of 1.1 air outlet of drying machine of the drying unit 1 and switch unit 2
It is connected, 2.1 air outlet of the first switching valve of switch unit 2 is connected with the air inlet of roasting unit 3, and roasting unit 3 goes out
Air port is connected with 2.3 air inlet of third switching valve of switch unit 2,2.3 air outlet of third switching valve of switch unit 2 and dry
1.1 air inlet of drying machine of dry unit 1 is connected, and whole process forms the wind path circulation of the drying machine of drying unit；
1.2 air outlet of drier of the drying unit 1 is connected with 2.2 air inlet of the second switching valve of switch unit 2
It connects, 2.2 air outlet of the second switching valve of switch unit 2 is connected with the air inlet of roasting unit 3, the air outlet of roasting unit 3
It is connected with 2.4 air inlet of the 4th switching valve of switch unit 2,2.4 air outlet of the 4th switching valve of switch unit 2 and dry list
1.2 air inlet of drier of member 1 is connected, and whole process forms the wind path circulation of the drier of drying unit；
The discharge port of roasting unit 3 is connected with the feed inlet of depth cooling unit 4, the air outlet of depth cooling unit 4
Connected with the air inlet of fuel supply unit 5, the third switching valve 2.3 of the air outlet of fuel supply unit 5 and switch unit 2 into
Air port is connected；
The drying machine 1.1 of the drying unit 1 is additionally provided with dry machine inlet；The drying of the drying unit 1
Device 1.2 is additionally provided with dryer feed mouth；The roasting unit 3 is additionally provided with dust-laden exhaust gas D air outlet；The depth is cold
But unit 4 is additionally provided with surrounding air E air inlet and light calcined magnesia C discharge port.
The drying machine 1.1 of the drying unit is to break up dryer；
The drier 1.2 of the drying unit is venturi drier；
In the switch unit 2, switching valve is electric hydraulic gate valve；
The roasting unit 3, including suspension separator, suspended preheater, suspension roaster, the first outstanding air cooler,
Second outstanding air cooler and third hang air cooler, and each equipment is sequentially connected by liquid-filled pipe；
The depth cooling unit 4, including deep cooler, cooling blower and deduster pass through between each equipment
Liquid-filled pipe is sequentially connected；
Fuel in the fuel supply unit is gaseous fuel.
1.1 feed inlet of drying machine of the drying unit is connected with the discharge port of ore dressing powder supplied materials；The drying
1.2 feed inlet of drier of unit is connected with the discharge port of pulp supplied materials.
The air outlet of the fuel supply unit 5 is connected with 2.3 air inlet of third switching valve of switch unit 2, tool
Body is that the fuel outlet of fuel supply unit 5 is connected with 2.3 air inlet of third switching valve of switch unit 2.
The air inlet of the deep cooler of the depth cooling unit 4 is connected with surrounding air air inlet.
A method of more specification light calcined magnesias are prepared, above-mentioned system and device is utilized, includes the following steps:
Step 1, switch
According to the difference of raw material, setting prepares the switching valve of switch unit in the system and device of more specification light calcined magnesias
Switch, to carry out the preparation of more specification light calcined magnesias, the material that the present embodiment is selected is ore dressing powder A, specially concentrate powder,
Its preparation process specifically:
The first switching valve and third switching valve of switch unit are opened, the second switching valve and the 4th switching valve are closed, is used
The drying machine of drying unit is dried；
The mass percent 8~15% of the moisture content of drying base of concentrate powder in the ore dressing powder, granularity are that -200 mesh account for 70
~80%, ingredient are as follows: SiO2For 0.2%, CaO 0.5%, Fe2O3For 0.28%, Al2O3For 0.02%, P2O5For
0.07%, surplus MgO.
Step 2, dry
Ore dressing powder is added to the drying machine 1.1 of drying unit, is broken up through drying machine, and is sufficiently exchanged heat with drying hot gas, is selected
After miberal powder drying, the drying machine gas after being dried and the ore dressing powder material after drying, the ore dressing powder material after drying is with baking
Drying machine gas after dry enters roasting unit by the first switching valve 2.1 of switch unit；
Wherein, the drying hot gas of the drying machine of drying unit is that the roasting waste heat of roasting unit suspended preheater and burning supply
Answer the mixing hot gas of the fuel heat of unit combustion product；The temperature of the drying hot gas is 500~700 DEG C, mixing hot gas warp
Third switching valve enters dryer entrance mouth；
The mixing temperature of the ore dressing powder material after drying machine gas and drying after the drying is 120~170 DEG C；
Ore dressing powder material after the drying, mass percent≤1% of moisture content of drying base；
Step 3, it roasts
It is obtained into the gas after the drying of roasting unit and the material after drying by separation, preheating, roasting and cooling
To thermal material and dust-laden exhaust gas, after dust-laden exhaust gas D enters the processing of conventional purification system, dust content≤10mg/Nm3Exhaust gas row
Sky, thermal material enter depth cooling unit；Wherein, the temperature of the thermal material is 150~200 DEG C；
Described is separated into the gas and feed separation after drying by the suspension separator of roasting unit, and material enters
Suspended preheater is preheated, and gas a part empties after entering the processing of conventional purification system, and it is outstanding that a part sequentially enters third
Air cooler, the second outstanding air cooler, the first outstanding air cooler, suspension roaster are heated.
The preheating is that material is utilized the hot gas heated through suspension roaster by the suspended preheater of roasting unit
It is preheated and is separated, it is object that material, which enters suspension roaster and roasted, and hot gas enters drying unit after entering switch unit
Material is dry to provide heat.
Described being roasted to roasts material by the suspension roaster of roasting unit, the material after roasting successively into
Enter the first outstanding air cooler, the second outstanding air cooler, third is hanged air cooler and cooled down.
The first outstanding air cooler being cooled to by roasting unit, the second outstanding air cooler, third hang air cooling
Device cools down material, and the material after roasting enters depth cooling unit, and gas enters suspension roaster.
Gas after the drying is the drying machine gas after drying；Material after the drying is the choosing after drying
Miberal powder material.
Step 4, depth is cooling
After thermal material enters depth cooling unit, after carrying out heat exchange with surrounding air, obtain light calcined magnesia and changing
Hot-air, heat exchange air send combustion-supporting to burning supply unit, wherein thermal material is resulting after the processing of depth cooling unit
Temperature≤80 DEG C of light calcined magnesia, resulting heat exchange air themperature≤80 DEG C.
The thermal material enters the deep cooler of depth cooling unit, carries out heat exchange with surrounding air E, obtains light
Burned magnesium oxide C product, the gas of deep cooler separation, which enters, enters fuel supply unit after deduster is dusted.
Embodiment 2
A kind of system and device preparing more specification light calcined magnesias, with embodiment 1.
A method of more specification light calcined magnesias are prepared, above-mentioned system and device is utilized, includes the following steps:
Step 1, switch
According to the difference of raw material, setting prepares the switching valve of switch unit in the system and device of more specification light calcined magnesias
Switch, to carry out the preparation of more specification light calcined magnesias, the material that the present embodiment is selected is ore dressing powder A, specially mine tailing,
Its preparation process specifically:
The first switching valve and third switching valve of switch unit are opened, the second switching valve and the 4th switching valve are closed, is used
The drying machine of drying unit is dried；
The mass percent 12~19% of the moisture content of drying base of mine tailing in the ore dressing powder, granularity are that -200 mesh account for 75
~85%, ingredient are as follows: SiO2For 5.05%, CaO 1.19%, Fe2O3For 0.72%, Al2O3For 0.11%, P2O5For
0.1%, surplus MgO.
Step 2, dry
Ore dressing powder is added to the drying machine 1.1 of drying unit, is broken up through drying machine, and is sufficiently exchanged heat with drying hot gas, is selected
After miberal powder drying, the drying machine gas after being dried and the ore dressing powder material after drying, the ore dressing powder material after drying is with baking
Drying machine gas after dry enters roasting unit by the first switching valve 2.1 of switch unit；
Wherein, the drying hot gas of the drying machine of drying unit is that the roasting waste heat of roasting unit suspended preheater and burning supply
Answer the mixing hot gas of the fuel heat of unit combustion product；The temperature of the drying hot gas is 500~700 DEG C, mixing hot gas warp
Third switching valve enters dryer entrance mouth；
The mixing temperature of the ore dressing powder material after drying machine gas and drying after the drying is 120~170 DEG C；
Ore dressing powder material after the drying, mass percent≤1% of moisture content of drying base；
Step 3, it roasts
It is obtained into the gas after the drying of roasting unit and the material after drying by separation, preheating, roasting and cooling
To thermal material and dust-laden exhaust gas, after dust-laden exhaust gas D enters the processing of conventional purification system, dust content≤10mg/Nm3Exhaust gas row
Sky, thermal material enter depth cooling unit；Wherein, the temperature of the thermal material is 150~200 DEG C；
Described is separated into the gas and feed separation after drying by the suspension separator of roasting unit, and material enters
Suspended preheater is preheated, and gas a part empties after entering the processing of conventional purification system, and it is outstanding that a part sequentially enters third
Air cooler, the second outstanding air cooler, the first outstanding air cooler, suspension roaster are heated.
The preheating is that material is utilized the hot gas heated through suspension roaster by the suspended preheater of roasting unit
It is preheated and is separated, it is object that material, which enters suspension roaster and roasted, and hot gas enters drying unit after entering switch unit
Material is dry to provide heat.
Described being roasted to roasts material by the suspension roaster of roasting unit, the material after roasting successively into
Enter the first outstanding air cooler, the second outstanding air cooler, third is hanged air cooler and cooled down.
The first outstanding air cooler being cooled to by roasting unit, the second outstanding air cooler, third hang air cooling
Device cools down material, and the material after roasting enters depth cooling unit, and gas enters suspension roaster.
Gas after the drying is the drying machine gas after drying；Material after the drying is the choosing after drying
Miberal powder material.
Step 4, depth is cooling
After thermal material enters depth cooling unit, after carrying out heat exchange with surrounding air, obtain light calcined magnesia C and changing
Hot-air, heat exchange air send combustion-supporting to burning supply unit, wherein thermal material is resulting after the processing of depth cooling unit
Temperature≤80 DEG C of light calcined magnesia, resulting heat exchange air themperature≤80 DEG C.
The thermal material enters the deep cooler of depth cooling unit, carries out heat exchange with surrounding air E, obtains light
Burned magnesium oxide C product, the gas of deep cooler separation, which enters, enters fuel supply unit after deduster is dusted.
Embodiment 3
A kind of system and device preparing more specification light calcined magnesias, with embodiment 1.
A method of more specification light calcined magnesias are prepared, above-mentioned system and device is utilized, includes the following steps:
Step 1, switch
According to the difference of raw material, setting prepares the switching valve of switch unit in the system and device of more specification light calcined magnesias
Switch, to carry out the preparation of more specification light calcined magnesias, the material that the present embodiment is selected is pulp B, preparation process tool
Body are as follows:
The second switching valve and the 4th switching valve are opened, the first switching valve and third switching valve are closed, using drying unit
Drier is dried；
The mass percent 3~5% of the moisture content of drying base of the pulp, granularity are that -200 mesh account for 65~75%,
Ingredient are as follows: SiO2For 3.5%, CaO 3.0%, surplus MgO.
Step 2, dry
Pulp is added to the drier 1.2 of drying unit 1, the roasting waste heat gas with 3 suspended preheater of roasting unit
Sufficiently heat exchange, after pulp drying, the drier gas after being dried is with the dry mine powder material after drying, the dry mine after drying
Powder material enters roasting unit with the drier gas after drying, by the second switching valve of switch unit；
Wherein, the temperature of the roasting waste heat gas of the roasting unit is 300~500 DEG C, more than the roasting of roasting unit
Hot gas enters drier air inlet through the 4th switching valve；
The mixing temperature of the dry mine powder material after drier gas and drying after the drying is 170~220 DEG C；
Dry mine powder material after the drying, mass percent≤1% of moisture content of drying base；
Step 3, it roasts
It is obtained into the gas after the drying of roasting unit and the material after drying by separation, preheating, roasting and cooling
To thermal material and dust-laden exhaust gas, after dust-laden exhaust gas D enters the processing of conventional purification system, dust content≤10mg/Nm3Exhaust gas row
Sky, thermal material enter depth cooling unit；Wherein, the temperature of the thermal material is 150~200 DEG C；
Described is separated into the gas and feed separation after drying by the suspension separator of roasting unit, and material enters
Suspended preheater is preheated, and gas a part empties after entering the processing of conventional purification system, and it is outstanding that a part sequentially enters third
Air cooler, the second outstanding air cooler, the first outstanding air cooler, suspension roaster are heated.
The preheating is that material is utilized the hot gas heated through suspension roaster by the suspended preheater of roasting unit
It is preheated and is separated, it is object that material, which enters suspension roaster and roasted, and hot gas enters drying unit after entering switch unit
Material is dry to provide heat.
Described being roasted to roasts material by the suspension roaster of roasting unit, the material after roasting successively into
Enter the first outstanding air cooler, the second outstanding air cooler, third is hanged air cooler and cooled down.
The first outstanding air cooler being cooled to by roasting unit, the second outstanding air cooler, third hang air cooling
Device cools down material, and the material after roasting enters depth cooling unit, and gas enters suspension roaster.
Gas after the drying is the drier gas after drying；Material after the drying is dry after drying
Miberal powder material.
Step 4, depth is cooling
After thermal material enters depth cooling unit, after carrying out heat exchange with surrounding air, obtain light calcined magnesia and changing
Hot-air, heat exchange air send combustion-supporting to burning supply unit, wherein thermal material is resulting after the processing of depth cooling unit
Temperature≤80 DEG C of light calcined magnesia, resulting heat exchange air themperature≤80 DEG C.
The thermal material enters the deep cooler of depth cooling unit, carries out heat exchange with surrounding air E, obtains light
Burned magnesium oxide C product, the gas of deep cooler separation, which enters, enters fuel supply unit after deduster is dusted.
Claims (10)
1. a kind of system and device for preparing more specification light calcined magnesias, which is characterized in that this prepares more specification light calcined magnesias
System and device includes: drying unit, switch unit, roasting unit, depth cooling unit and fuel supply unit；
The drying unit, including drying machine and drier；
The switch unit, including the first switching valve, the second switching valve, third switching valve and the 4th switching valve；
Wherein, the dryer outlet mouth of the drying unit is connected with the first switching valve air inlet of switch unit, switching
First switching valve air outlet of unit is connected with the air inlet of roasting unit, and the of the air outlet of roasting unit and switch unit
Three switching valve air inlets are connected, and the third switching valve air outlet of switch unit is connected with the dryer entrance mouth of drying unit
It connects, whole process forms the wind path circulation of the drying machine of drying unit；
The drier air outlet of the drying unit is connected with the second switching valve air inlet of switch unit, switch unit
Second switching valve air outlet is connected with the air inlet of roasting unit, the 4th switching of the air outlet and switch unit of roasting unit
Valve air inlet is connected, and the 4th switching valve air outlet of switch unit is connected with the drier air inlet of drying unit, entirely
Process forms the wind path circulation of the drier of drying unit；
The discharge port of roasting unit is connected with the feed inlet of depth cooling unit, and the air outlet and fuel of depth cooling unit supply
The air inlet of unit is answered to connect, the air outlet of fuel supply unit is connected with the third switching valve air inlet of switch unit；
The drying machine of the drying unit is additionally provided with dry machine inlet；The drier of the drying unit is additionally provided with
Dryer feed mouth；The roasting unit is additionally provided with dust-laden exhaust gas air outlet；The depth cooling unit is additionally provided with
Surrounding air air inlet and outlet for product.
2. preparing the system and device of more specification light calcined magnesias as described in claim 1, which is characterized in that described is dry single
The drying machine of member is to break up dryer.
3. preparing the system and device of more specification light calcined magnesias as described in claim 1, which is characterized in that described is dry single
The drier of member is venturi drier.
4. preparing the system and device of more specification light calcined magnesias as described in claim 1, which is characterized in that the switching list
In member, switching valve is one of electric brake plate valve, Pneumatic gate valve or electric hydraulic gate valve.
5. preparing the system and device of more specification light calcined magnesias as described in claim 1, which is characterized in that the roasting list
Member, including suspension separator, suspended preheater, suspension roaster, the first outstanding air cooler, the second outstanding air cooler and third are outstanding
Air cooler, each equipment are sequentially connected by liquid-filled pipe.
6. preparing the system and device of more specification light calcined magnesias as described in claim 1, which is characterized in that the depth is cold
But unit, including deep cooler, cooling blower and deduster are sequentially connected between each equipment by liquid-filled pipe.
7. preparing the system and device of more specification light calcined magnesias as described in claim 1, which is characterized in that the fuel supplies
Answering the fuel in unit is one of gaseous fuel, liquid fuel or solid fuel.
8. preparing the system and device of more specification light calcined magnesias as described in claim 1, which is characterized in that described is dry single
The drying machine inlet of member is connected with the discharge port of ore dressing powder supplied materials；The dryer feed mouth and dry mine of the drying unit
The discharge port of powder supplied materials is connected.
9. preparing the system and device of more specification light calcined magnesias as described in claim 1, which is characterized in that the fuel supplies
The air outlet of unit is answered to be connected with the third switching valve air inlet of switch unit, specially the fuel outlet of fuel supply unit
It is connected with the third switching valve air inlet of switch unit.
10. preparing the system and device of more specification light calcined magnesias as described in claim 1, which is characterized in that the depth
The air inlet of the deep cooler of cooling unit is connected with surrounding air air inlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821173781.4U CN208562168U (en) | 2018-07-24 | 2018-07-24 | A kind of system and device preparing more specification light calcined magnesias |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821173781.4U CN208562168U (en) | 2018-07-24 | 2018-07-24 | A kind of system and device preparing more specification light calcined magnesias |
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| Publication Number | Publication Date |
|---|---|
| CN208562168U true CN208562168U (en) | 2019-03-01 |
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| CN201821173781.4U Active CN208562168U (en) | 2018-07-24 | 2018-07-24 | A kind of system and device preparing more specification light calcined magnesias |
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| Country | Link |
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| CN (1) | CN208562168U (en) |
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2018
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