CN103265268B - Preparation method and device of toughened ceramic - Google Patents
Preparation method and device of toughened ceramic Download PDFInfo
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- CN103265268B CN103265268B CN201310228060.4A CN201310228060A CN103265268B CN 103265268 B CN103265268 B CN 103265268B CN 201310228060 A CN201310228060 A CN 201310228060A CN 103265268 B CN103265268 B CN 103265268B
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Abstract
The invention relates to a preparation method and a preparation device of toughened ceramic, which belong to the field of toughened ceramic. The toughened ceramic comprises the following materials in parts by weight: 99-100 parts of coal gangues, 0.1-5 parts of neodymium oxide and 0.1-8 parts of cerium oxide. The preparation method and the preparation device of toughened ceramic are the production method and the production device of toughened ceramic for carrying out deoxidation and nitridation on aluminum silicon oxide and other ingredients in the coal gangues and converting the aluminum silicon oxide and the other components into aluminum silicon nitride. The preparation method and the preparation device of the toughened ceramic are combination for producing toughened ceramic by virtue of coal gangue power generation and coal gangue liquid, so that heat energy generated in the coal gangue liquefying process is utilized for generating power, and therefore, the energy resources are saved and low-cost production is realized.
Description
Technical field
The invention belongs to a kind of preparation method and device of toughened ceramic.
Background technology
Coal gangue thermal value be generally 800～2800 cards/gram, its inorganic components is mainly oxide compound and some rare metal of silicon, aluminium, calcium, magnesium, iron, vanadium, the percentage of its inorganic components composition: SiO
2be 52～65; Al
2o
3be 16～46; Fe
2o
3be 0.03～14.63; CaO is 0.42～2.32; MgO is 0.44～2.41; TiO
2be 0.90～4; P
2o
5be 0.007～0.24; K
2o+Na
2o is 1.45～3.9; V
2o
5be 0.008～0.03.
Physicochemical property and the property of toughened ceramic are admitted by people at present, and the production method of toughened ceramic is more, but expensive high energy consumption problem does not still solve, the method for also not utilizing the mineral composition in coal gangue to carry out deoxidation nitrogenize displacement at present.
Summary of the invention
The invention provides a kind of preparation method and device of toughened ceramic, to solve the expensive high energy consumption problem of depositing in the production of toughened ceramic.
The technical scheme that the present invention takes is: the raw material and the preparation method that comprise following parts by weight:
Composition of raw materials
Coal gangue: 99-100 part
Neodymium trioxide: 0.1-5 part
Cerium oxide: 0.1-8 part
Preparation method is as follows:
Powder-making machine is made 80-300 object fine powder by coal gangue and is sent in powder storehouse, send into decarburization after high-temperature gasification burning in a plasma combustion machine by powder feeding machine, enter in boiler liquefied room, generation inflammable gas in boiler liquefied room enters that boiler combustion is indoor fully burns this inflammable gas, the steam producing enters drum, then removes generating set;
The flue gas that burning produces enters denitration dirt device, taken away by induced draft fan, the nitrogen that the liquid substance that liquefied room produces and Nitrogen plant produce enters in secondary plasma combustion machine jointly, under the condition of high temperature of 1750-5000 degree, deoxidation is put after nitrogen, enter tempering by high temperature valve one and pipeline indoor, the oxynitrides gas of the indoor high temperature of tempering enters boiler furnace by high temperature valve two, in the time that the indoor liquid capacity of tempering reaches 60 ~ 80%, the high temperature valve being attached thereto is closed, pressurization passes into nitrogen, make the nitrogen pressure passing into reach 1.5-30 MPa, after pressurize 0.5-30 hour, the indoor product of tempering passes through high temperature outlet valve, enter in formed product processing unit (plant).
The present invention produces the device of toughened ceramic: body of heater comprises boiler surface assembly and drum, body of heater inside once plasma combustion machine is fixedly connected with liquefied room, liquefied room top is boiler furnace, this liquefied room is connected with secondary plasma combustion machine, this secondary plasma combustion machine is connected with tempering chamber through valve one, this tempering chamber is connected with this boiler furnace by valve two, discharge valve is connected with this tempering chamber, tempering chamber water wall is coated on tempering outdoor, drum is connected with this tempering chamber water wall by oiler feed downtake, this tempering chamber water wall is connected with drum by pipeline.
The present invention is that a kind of electrode plasma arc high-temp combustion that utilizes is by the oxidation sial in coal gangue and other compositions, carry out deoxidation and put nitrogen, change production method and device that aluminium silicon nitride composition forms toughened ceramic into, it is the one combination that utilizes coal gangue power generation and spoil liquid production toughened ceramic, the heat energy producing when spoil is liquefied has carried out generating utilization, save the energy, realized low cost production.
The key technical indexes of product of the present invention: maximum operation (service) temperature: 1200 DEG C, life-time service temperature: 100 DEG C of +/-, volume density is: 3.2-3.4g/cm
3thermal expansivity: 5.6x10 (6) K (1) (25 DEG C one 400 DEG C), bending strength: 7500-8500MPa (high-strength 9000 MPa), Young's modulus is: 20000 ~ 40000MPa, thermal conductivity is: 20-30W.m (1) .K (1), knoop hardness is: 2000-30000MPa.
Brief description of the drawings
Fig. 1 is a kind of schema of production method of the present invention;
Fig. 2 is a kind of structural representation of production equipment of the present invention.
Embodiment
The preparation method of 1 one kinds of toughened ceramics of embodiment
The technical scheme that the present invention takes is: the raw material and the preparation method that comprise following parts by weight:
Composition of raw materials
Coal gangue: 99kg
Neodymium trioxide: 0.1kg
Cerium oxide: 0.1kg
Preparation method is as follows:
(1) powder-making machine is made 80 object fine powders by coal gangue and is sent in powder storehouse, send into decarburization after high-temperature gasification burning in a plasma combustion machine by powder feeding machine, enter in boiler liquefied room, generation inflammable gas in boiler liquefied room enters that boiler combustion is indoor fully burns this inflammable gas, the steam producing enters drum, then removes generating set;
(2) flue gas that burning produces enters denitration dirt device, taken away by induced draft fan, the nitrogen that the liquid substance that liquefied room produces and Nitrogen plant produce enters in secondary plasma combustion machine jointly, under the condition of high temperature of 1750 degree, deoxidation is put after nitrogen, enter tempering by high temperature valve one and pipeline indoor, the oxynitrides gas of the indoor high temperature of tempering enters boiler furnace by high temperature valve two, in the time that the indoor liquid capacity of tempering reaches 60%, the high temperature valve being attached thereto is closed, pressurization passes into nitrogen, make the nitrogen pressure passing into reach 1.5 MPas, after pressurize 0.5 hour, the indoor product of tempering passes through high temperature outlet valve, enter in formed product processing unit (plant).
The preparation method of 2 one kinds of toughened ceramics of embodiment
The technical scheme that the present invention takes is: the raw material and the preparation method that comprise following parts by weight:
Composition of raw materials
Coal gangue: 99.5kg
Neodymium trioxide: 2.5kg
Cerium oxide: 4kg
Preparation method is as follows:
(1) powder-making machine is made 200 object fine powders by coal gangue and is sent in powder storehouse, send into decarburization after high-temperature gasification burning in a plasma combustion machine by powder feeding machine, enter in boiler liquefied room, generation inflammable gas in boiler liquefied room enters that boiler combustion is indoor fully burns this inflammable gas, the steam producing enters drum, then removes generating set;
(2) flue gas that burning produces enters denitration dirt device, taken away by induced draft fan, the nitrogen that the liquid substance that liquefied room produces and Nitrogen plant produce enters in secondary plasma combustion machine jointly, under the condition of high temperature of 3300 degree, deoxidation is put after nitrogen, enter tempering by high temperature valve one and pipeline indoor, the oxynitrides gas of the indoor high temperature of tempering enters boiler furnace by high temperature valve two, in the time that the indoor liquid capacity of tempering reaches 70%, the high temperature valve being attached thereto is closed, pressurization passes into nitrogen, make the nitrogen pressure passing into reach 16 MPas, after pressurize 15 hours, the indoor product of tempering passes through high temperature outlet valve, enter in formed product processing unit (plant).
The preparation method of 3 one kinds of toughened ceramics of embodiment
The technical scheme that the present invention takes is: the raw material and the preparation method that comprise following parts by weight:
Composition of raw materials
Coal gangue: 100kg
Neodymium trioxide: 5kg
Cerium oxide: 8kg
Preparation method is as follows:
(1) powder-making machine is made 300 object fine powders by coal gangue and is sent in powder storehouse, send into decarburization after high-temperature gasification burning in a plasma combustion machine by powder feeding machine, enter in boiler liquefied room, generation inflammable gas in boiler liquefied room enters that boiler combustion is indoor fully burns this inflammable gas, the steam producing enters drum, then removes generating set;
(2) flue gas that burning produces enters denitration dirt device, taken away by induced draft fan, the nitrogen that the liquid substance that liquefied room produces and Nitrogen plant produce enters in secondary plasma combustion machine jointly, under the condition of high temperature of 5000 degree, deoxidation is put after nitrogen, enter tempering by high temperature valve one and pipeline indoor, the oxynitrides gas of the indoor high temperature of tempering enters boiler furnace by high temperature valve two, in the time that the indoor liquid capacity of tempering reaches 80%, the high temperature valve being attached thereto is closed, pressurization passes into nitrogen, make the nitrogen pressure passing into reach 30 MPas, after pressurize 30 hours, the indoor product of tempering passes through high temperature outlet valve, enter in formed product processing unit (plant).
A kind of device of producing toughened ceramic of embodiment 4 the present invention
Body of heater 4 comprises boiler surface assembly 12 and drum 1, body of heater inside once plasma combustion machine 10 is fixedly connected with liquefied room 11, liquefied room top is boiler furnace 3, this liquefied room is connected with secondary plasma combustion machine 9, this secondary plasma combustion machine 9 is connected with tempering chamber 7 through valve 1, this tempering chamber is connected with this boiler furnace by valve 25, discharge valve 13 is connected with this tempering chamber, tempering chamber water wall 6 is coated on 7 outsides, tempering chamber, drum 1 is connected with this tempering chamber water wall by oiler feed downtake 2, this tempering chamber water wall 6 is connected with drum 1 by pipeline.
The principle of work of the present embodiment: after the fine powder that coal gangue, rare earth are made is sent into an interior high-temperature gasification burning of plasma combustion machine 10, decarburization enters in boiler liquefied room 11, generation inflammable gas in liquefied room enters that boiler furnace 3 is interior fully to burn this inflammable gas, the steam producing enters drum 1, then removes generating set; The flue gas that burning produces enters denitration dirt device, taken away by induced draft fan, the nitrogen that the generation liquid substance of liquefied room 11 and Nitrogen plant produce jointly enters 9 deoxidations of secondary plasma combustion machine and puts nitrogen, enter afterwards tempering chamber 7 fixed nitrogen, nitride gas is got back to again in boiler furnace 3 by tempering chamber valve 5, and product is discharged by discharge valve 13.Enter oiler feed downtake 2 by the water of drum 1, enter tempering chamber water wall 6, enter drum 1 by tempering chamber water wall 6, liquefied room 11 is built by laying bricks or stones by silicon carbide brick.
Claims (2)
1. a preparation method for toughened ceramic, is characterized in that, comprises raw material and the preparation method of following parts by weight:
Composition of raw materials:
Coal gangue: 99-100 part;
Neodymium trioxide: 0.1-5 part;
Cerium oxide: 0.1-8 part;
Preparation method is as follows:
(1) powder-making machine is made 80-300 object fine powder by coal gangue and is sent in powder storehouse, send into decarburization after high-temperature gasification burning in a plasma combustion machine by powder feeding machine, enter in boiler liquefied room, generation inflammable gas in boiler liquefied room enters that boiler combustion is indoor fully burns this inflammable gas, the steam producing enters drum, then removes generating set;
(2) flue gas that burning produces enters denitration dirt device, taken away by induced draft fan, the nitrogen that the liquid substance that liquefied room produces and Nitrogen plant produce enters in secondary plasma combustion machine jointly, under the condition of high temperature of 1750-5000 DEG C, deoxidation is put after nitrogen, enter tempering by high temperature valve one and pipeline indoor, the oxynitrides gas of the indoor high temperature of tempering enters boiler furnace by high temperature valve two, in the time that the indoor liquid capacity of tempering reaches 60 ~ 80%, the high temperature valve being attached thereto is closed, pressurization passes into nitrogen, make the nitrogen pressure passing into reach 1.5-30 MPa, after pressurize 0.5-30 hour, the indoor product of tempering passes through high temperature outlet valve, enter in formed product processing unit (plant),
For the apparatus structure of realizing described preparation method be: body of heater comprises boiler surface assembly and drum, body of heater inside once plasma combustion machine is fixedly connected with liquefied room, liquefied room top is boiler furnace, this liquefied room is connected with secondary plasma combustion machine, this secondary plasma combustion machine is connected with tempering chamber through valve one, this tempering chamber is connected with this boiler furnace by valve two, discharge valve is connected with this tempering chamber, tempering chamber water wall is coated on tempering outdoor, drum is connected with this tempering chamber water wall by oiler feed downtake, this tempering chamber water wall is connected with drum by pipeline.
2. one kind for realizing preparation method's the device of toughened ceramic as claimed in claim 1, it is characterized in that: body of heater comprises boiler surface assembly and drum, body of heater inside once plasma combustion machine is fixedly connected with liquefied room, liquefied room top is boiler furnace, this liquefied room is connected with secondary plasma combustion machine, this secondary plasma combustion machine is connected with tempering chamber through valve one, this tempering chamber is connected with this boiler furnace by valve two, discharge valve is connected with this tempering chamber, tempering chamber water wall is coated on tempering outdoor, drum is connected with this tempering chamber water wall by oiler feed downtake, this tempering chamber water wall is connected with drum by pipeline.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807345A (en) * | 2006-02-22 | 2006-07-26 | 郑州大学 | Alumina base mullite homogeneous material preparation method |
| CN102050618A (en) * | 2010-10-30 | 2011-05-11 | 文鹏飞 | New use of toughened ceramic |
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2013
- 2013-06-09 CN CN201310228060.4A patent/CN103265268B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807345A (en) * | 2006-02-22 | 2006-07-26 | 郑州大学 | Alumina base mullite homogeneous material preparation method |
| CN102050618A (en) * | 2010-10-30 | 2011-05-11 | 文鹏飞 | New use of toughened ceramic |
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