CN102285788A - Method for preparing electroconductive ceramic product from pyrite cinder - Google Patents
Method for preparing electroconductive ceramic product from pyrite cinder Download PDFInfo
- Publication number
- CN102285788A CN102285788A CN2011101635446A CN201110163544A CN102285788A CN 102285788 A CN102285788 A CN 102285788A CN 2011101635446 A CN2011101635446 A CN 2011101635446A CN 201110163544 A CN201110163544 A CN 201110163544A CN 102285788 A CN102285788 A CN 102285788A
- Authority
- CN
- China
- Prior art keywords
- pyrite cinder
- roasting
- moulding
- reductive agent
- conductivity ceramics
- 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
Abstract
The invention discloses a method for preparing an electroconductive ceramic product from pyrite cinder, and the method comprises the following steps: 1) pretreating; 2) proportioning; 3) mixing; 4) shaping; 5) baking; and 6) preparing the product. By using the preparation process disclosed by the invention, the resistivity and compressive strength of the electroconductive ceramic product can be adjusted above 0.6 Omega.m and 5-120 MPa, respectively; and the consumption of pyrite cinder is larger than 80%. The electroconductive ceramic product can be used as a building structural material, can also be used for electric industry, electromagnetic interference prevention, electromagnetic shielding, industrial electrostatic prevention, electric heaters, electric power equipment grounding engineering and cathode protection of reinforcing steel bars, and is a multifunctional intelligent product.
Description
Technical field
The invention belongs to and utilize the preparation of solid industrial residue to be used for the method for the conductivity ceramics goods in places such as inner wall of building or ground, relate to the method that a kind of pyrite cinder prepares the conductivity ceramics goods.The conductivity ceramics goods that make are particularly useful for making conduction antistatic material, building conductive exothermal internal wall brick or floor tile, and also can be used for other needs in the low-resistivity characteristic types of applications.
Background technology
Pyrite cinder is to adopt sulfurous iron ore to prepare a kind of waste residue of being discharged in sulfuric acid or the sulphur process.China's ferro-sulphur ore is abundant, accounts for 10% of world's total reserves, occupies the 3rd, only the former six Pan Shui economic zone coal measures ferro-sulphur ore reserves of Chuan Nan, the northern regions of the Yunnan Province, the west of Guizhou Province just reach 6,500,000,000 tons, prospective reserves is more than 40,000,000,000 tons, but China's sulfurous iron ore many based in low-grade, average geologic grade 17.68%.The low grade pyrite routine is utilized as washing and becomes pyrite concentrate to make the gas washing in SA production raw material in China, but ecotope, industrial and agricultural production, the people's health of storing up the locality of a large amount of milltailings slags have caused serious harm, and environment such as waters are on every side caused serious pollution.1 ton of sulfuric acid of the every production of pyrite concentrate simultaneously approximately discharges 0.7 ton pyrite cinder, and is current, the millions of burning slags of the annual discharging of China to up to ten million tons, and quantity discharged is quite big, and technological breakthrough is expected in its effective utilization always.Low grade pyrite direct production sulphur, sulfuric acid new technology during existing company and enterprise or scientific research institutions have successfully developed and used, comparing it with conventional art does not need technologies such as ore dressing, solved the environmental stress of tailings discharging, but its slag roasting quantity discharged is bigger.This burns slag, and the iron grade is hanged down can not be used as iron-smelting raw material, produces solid sewage-treating agent and red iron oxide etc. and makes that because of demand is few slag roasting consumption is little, burns till with the mineralizer application wideless as cement auxiliary ingredients and alternative iron ore making cement.Therefore, how high efficiency, low cost, on a large scale utilize in low grade pyrite burn slag restrict especially in low grade pyrite directly utilize new technology spread to use bottleneck.
Summary of the invention
Purpose of the present invention is intended to utilize the high ferro pyrite cinder of discharging behind the pyrite-based sulfuric acid production to prepare the high conductivity ceramics goods of added value, and it can be used to the places such as warming ground or anti-electrostatic that generate heat, energy-saving and emission-reduction.The present invention proposes a kind of method of utilizing solid trade waste pyrite cinder to prepare the conductivity ceramics goods for main raw material, the conductivity ceramics goods that the present invention makes, not only with low cost, turn waste into wealth, and can mass consumption burn slag, there is not secondary emission to pollute.
Present technique prepares the conductivity ceramics goods with the industrial residue pyrite cinder, and it possesses higher mechanical property, and higher electroconductibility reaches resistivity stability preferably.Not only possess the characteristics of structured material but also possess electroconductibility, also possess alert and resourceful characteristic simultaneously.These conductivity ceramics goods not only can be used as building structural materials, and can be used for electrician, anti-electromagnetic interference, electromagnetic shielding, industrial anti-electrostatic, electric heater, power equipment earth work and reinforcing bar galvanic protection, are a kind of multifunctional intellectual goods.
Content of the present invention is: a kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the following steps:
A, pre-treatment: with pyrite cinder and mineralizer is fluorite or NaHCO
3Or phosphogypsum, abrasive dust is the powder of particle diameter≤0.1mm respectively, reductive agent is coal dust or coke or refinery coke, is the powder of particle diameter≤0.1mm with the reductive agent abrasive dust;
B, batching: by pyrite cinder: reductive agent is that the mass ratio of 10:0.5～1.5 mixes, and mixing mass ratio according to the mixture of pyrite cinder and reductive agent is 0%～8% mineralizer;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent and mineralizer is 300-500m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: is designed shape with compound at forming under the pressure, obtains the moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus,, be warmed up to 800 ℃, insulation 60～120min with the temperature rise rate of 4～6 ℃/min; Be warming up to 1250～1450 ℃ with 3～5 ℃/min again, insulation 30～240min;
F, finished product: cool to sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
The chemical constitution of pyrite cinder of the present invention and content can be unrestricted.
Adopt resistivity that preparation technology of the present invention can realize the conductivity ceramics goods more than 0.6 Ω m, ultimate compression strength is adjustable in 5MPa～120MPa scope.And the pyrite cinder consumption is greater than 80%.
Compared with prior art, the present invention has following characteristics and beneficial effect:
What (1) the conductivity ceramics goods of the present invention preparation adopted is trade waste---pyrite cinder, and consumption turns waste into wealth greater than 80%, and with low cost, satisfy national energy-saving and emission-reduction requirement;
(2) the conductivity ceramics goods of the present invention's preparation have lower resistivity, and higher intensity, Form Factor are optional, can be used for places such as anti-electrostatic, ground heating, and purposes is wide and functional;
(3) it is as follows that the present invention prepares the reaction and the electrical conduction mechanism of conductivity ceramics goods: at first under reducing atmosphere, and C and by C and O
2CO that insufficient reaction forms and the Fe in the pyrite cinder
2O
3Reaction is with Fe
2O
3Be reduced to FeO, Fe
3O
4And Fe and conducting electricity; Secondly under the high temperature of reaction, owing to reducing substance and other component effect make Fe
2O
3Form defective and conduct electricity; The at last intact coke of the excessive formation unreacted of coal dust and the graphite microcrystal structure that has and conduct electricity under the high temperature of reaction; Thereby these three kinds collaborative conductions of effect and bigger reduction resistivity makes electro-conductive material; Under the effect of high temperature and mineralizer, high-strength mineral such as moulding sample generation chemical reaction generation mullite increase considerably product strength, thereby make the high-strength conductivity ceramics goods of low-resistivity;
(4) preparation technology of the present invention is simple, and operation is practical easily.
Embodiment
The invention will be further described for embodiment plan given below; but can not be interpreted as it is limiting the scope of the invention; the person skilled in art to some nonessential improvement and adjustment that the present invention makes, still belongs to protection scope of the present invention according to the content of the invention described above.
Embodiment 1:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with the pyrite cinder abrasive dust to particle diameter≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
The technical analysis of coal dust is a fugitive constituent 19.38%, fixed carbon 61.51%, moisture 0.59%, ash content 18.51%; Per-cent is the mass percent example, and the back together;
The main moiety and the mass percent example of pyrite cinder are: SiO
230.47%, Al
2O
325.82%, Fe
2O
328.38%; The back together;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1250 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 2.6 Ω m, and intensity is 17MPa.
Embodiment 2:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: pyrite cinder and fluorite are distinguished abrasive dust to particle diameter≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 2% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1300 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 2.5 Ω m, and ultimate compression strength is 16MPa.
Embodiment 3:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: pyrite cinder and fluorite are distinguished abrasive dust to particle diameter≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 6% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1300 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 2.2 Ω m, and ultimate compression strength is 21MPa.
Embodiment 4:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with the pyrite cinder abrasive dust to particle diameter≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1300 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 2 Ω m, and intensity is 28MPa.
Embodiment 5:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with the pyrite cinder abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1350 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 3.2 Ω m, and ultimate compression strength is 48MPa.
Embodiment 6:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with pyrite cinder and fluorite respectively abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 2% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1350 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 3.4 Ω m, and ultimate compression strength is 44MPa.
Embodiment 7:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with pyrite cinder and fluorite respectively abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 4% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1350 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 4.2 Ω m, and ultimate compression strength is 60MPa.
In the foregoing description, described reducing atmosphere is the atmosphere of the CO (carbon monoxide converter) gas of reductive agent coal dust and oxygen reaction formation.
Embodiment 8:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with pyrite cinder and fluorite respectively abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 6% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1350 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 3.8 Ω m, and ultimate compression strength is 69MPa.
Embodiment 9:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with pyrite cinder and fluorite respectively abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 2% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1400 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 1.7 Ω m, and ultimate compression strength is 66MPa.
In the foregoing description, described reducing atmosphere is the atmosphere of the CO (carbon monoxide converter) gas of reductive agent coal dust and oxygen reaction formation.
Embodiment 10:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with pyrite cinder and fluorite respectively abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 4% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1400 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 1.8 Ω m, and ultimate compression strength is 76MPa.
Embodiment 11:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with pyrite cinder and fluorite respectively abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 6% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1400 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 3.0 Ω m, and ultimate compression strength is 94MPa.
Embodiment 12:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with pyrite cinder and fluorite respectively abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 2% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1450 ℃ with 3 ℃/min again, insulation 120min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 1.4 Ω m, and ultimate compression strength is 113MPa.
In the foregoing description, described reducing atmosphere is the atmosphere of the CO (carbon monoxide converter) gas of reductive agent coal dust and oxygen reaction formation.
Embodiment 13:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with pyrite cinder and fluorite respectively abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 2% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1400 ℃ with 3 ℃/min again, insulation 60min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 2.5 Ω m, and ultimate compression strength is 44MPa.
In the foregoing description, described reducing atmosphere is the atmosphere of the CO (carbon monoxide converter) gas of reductive agent coal dust and oxygen reaction formation.
Embodiment 14:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with pyrite cinder and fluorite respectively abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 6% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1400 ℃ with 3 ℃/min again, insulation 60min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 3.0 Ω m, and ultimate compression strength is 67MPa.
Embodiment 15:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with pyrite cinder and fluorite respectively abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 2% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1400 ℃ with 3 ℃/min again, insulation 180min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 1.8 Ω m, and ultimate compression strength is 25MPa.
Embodiment 16:
A kind of pyrite cinder prepares the method for conductivity ceramics goods, comprises the steps:
A, pre-treatment: with pyrite cinder and fluorite respectively abrasive dust to≤0.1mm; Coal dust is the powder of commercially available particle diameter≤0.1mm;
B, batching: by pyrite cinder: the reductive agent coal dust is that the mass ratio of 10:1 mixes, and takes by weighing the 3.5kg mixture, mixes mass ratio and be 6% fluorite;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent coal dust, mineralizer fluorite is 450m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: take by weighing compound 20g, put into the forming mould of a diameter 25mm, under the resistance to compression experimental machine with the speed of 200 N/S, goal pressure 30MPa, the dwell times 60, S was pressed, the moulding length-to-diameter ratio is 20/25 moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus of reducing atmosphere,, be warmed up to 800 ℃, be incubated roasting 60min again, be warming up to 1400 ℃ with 3 ℃/min again, insulation 180min with the temperature rise rate of 5 ℃/min;
F, finished product: under reducing atmosphere, cool to conduction sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
After testing, the resistivity of the conductivity ceramics goods that make is 4.2 Ω m, and ultimate compression strength is 22MPa.
In the foregoing description, described reducing atmosphere is the atmosphere that contains CO (carbon monoxide converter) gas that reductive agent coal dust and oxygen reaction form.
In the foregoing description, the main chemical constitution of described pyrite cinder and mass percent example also can be ferric oxide 25%～60%, silicon-dioxide 20%～35%, the arbitrary proportioning in aluminium sesquioxide 15%～30% this scope.
In the foregoing description, described reductive agent coal dust can replace with coke, refinery coke etc.
Adopt the conductivity ceramics goods of the present invention's preparation, according to its resistivity size, electroconductibility and mechanics and overall dimensions demand, can regulate the electroconductibility and the mechanics size of prepared conductivity ceramics goods, resistivity is adjustable more than 0.6 Ω m, and ultimate compression strength is adjustable at 5MPa～120MPa.The general volume scope of pyrite cinder is more than 80%, the same prior art of preparation method.
Claims (1)
1. a pyrite cinder prepares the method for conductivity ceramics goods, it is characterized in that, comprises the following steps:
A, pre-treatment: with pyrite cinder and mineralizer is fluorite or NaHCO
3Or phosphogypsum, abrasive dust is the powder of particle diameter≤0.1mm respectively, reductive agent is coal dust or coke or refinery coke, is the powder of particle diameter≤0.1mm with the reductive agent abrasive dust;
B, batching: by pyrite cinder: reductive agent is that the mass ratio of 10:0.5～1.5 mixes, and mixing mass ratio according to the mixture of pyrite cinder and reductive agent is 0%～8% mineralizer;
C, mixing: with mixed together thing mix grinding to Blain specific surface in grinding machine of pyrite cinder, reductive agent and mineralizer is 300-500m
2/ kg makes its thorough mixing even, makes compound;
D, moulding: is designed shape with compound at forming under the pressure, obtains the moulding sample;
E, roasting: the moulding sample is placed roasting in the High Temperature Furnaces Heating Apparatus,, be warmed up to 800 ℃, insulation 60～120min with the temperature rise rate of 4～6 ℃/min; Be warming up to 1250～1450 ℃ with 3～5 ℃/min again, insulation 30～240min;
F, finished product: cool to sample after the roasting with the furnace normal temperature and take out, promptly make the conductivity ceramics goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101635446A CN102285788A (en) | 2011-06-17 | 2011-06-17 | Method for preparing electroconductive ceramic product from pyrite cinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101635446A CN102285788A (en) | 2011-06-17 | 2011-06-17 | Method for preparing electroconductive ceramic product from pyrite cinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102285788A true CN102285788A (en) | 2011-12-21 |
Family
ID=45332570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101635446A Pending CN102285788A (en) | 2011-06-17 | 2011-06-17 | Method for preparing electroconductive ceramic product from pyrite cinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102285788A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104557073A (en) * | 2014-10-24 | 2015-04-29 | 叶香菲 | Light refractory brick for high-temperature furnaces |
| CN104743965A (en) * | 2015-03-25 | 2015-07-01 | 西南科技大学 | Preparation method for asphalt mixture capable of rapidly warming |
| CN105503151A (en) * | 2015-12-21 | 2016-04-20 | 广东家美陶瓷有限公司 | Anti-static ceramic body and production method thereof |
| CN106187093A (en) * | 2016-07-11 | 2016-12-07 | 无锡市华东电力设备有限公司 | A kind of method of preparing electroconductive ceramic product from pyrite cinder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102464A (en) * | 1985-04-01 | 1987-03-11 | 山东省新材料研究所 | A kind of ceramic powder and goods thereof |
| CN101935176A (en) * | 2010-07-27 | 2011-01-05 | 西南科技大学 | Method for preparing conductive admixture from pyrite smelting slag |
-
2011
- 2011-06-17 CN CN2011101635446A patent/CN102285788A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102464A (en) * | 1985-04-01 | 1987-03-11 | 山东省新材料研究所 | A kind of ceramic powder and goods thereof |
| CN101935176A (en) * | 2010-07-27 | 2011-01-05 | 西南科技大学 | Method for preparing conductive admixture from pyrite smelting slag |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104557073A (en) * | 2014-10-24 | 2015-04-29 | 叶香菲 | Light refractory brick for high-temperature furnaces |
| CN104557073B (en) * | 2014-10-24 | 2016-08-17 | 叶香菲 | High temperature kiln light fire brick |
| CN104743965A (en) * | 2015-03-25 | 2015-07-01 | 西南科技大学 | Preparation method for asphalt mixture capable of rapidly warming |
| CN105503151A (en) * | 2015-12-21 | 2016-04-20 | 广东家美陶瓷有限公司 | Anti-static ceramic body and production method thereof |
| CN106187093A (en) * | 2016-07-11 | 2016-12-07 | 无锡市华东电力设备有限公司 | A kind of method of preparing electroconductive ceramic product from pyrite cinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103397128B (en) | Method used for extracting iron from red mud by drastic reduction and method used for preparing gel material from secondary tailings | |
| CN102701164B (en) | Processing method for preparing phosphate rock powder into pellet yellow phosphorus charge | |
| CN101696116B (en) | Production method of large-size graphite electrode | |
| CN102101664B (en) | High-strength high-graphite carbon electrode and preparation method thereof | |
| CN101879599A (en) | Method for preparing reductive iron powder and high-purity refined iron powder by using iron ores | |
| CN102627281A (en) | Method for smelting metal silicon by using recycled silicon fines | |
| CN102285788A (en) | Method for preparing electroconductive ceramic product from pyrite cinder | |
| CN102992795A (en) | Environment-friendly castable for blast furnace iron runners | |
| CN101983002A (en) | Special carbon electrode for smelting of titanium slag and preparation method thereof | |
| CN103447148B (en) | Microwave reduction is utilized to contain concentration equipment and the magnetic selection method of bloodstone material | |
| CN110183120A (en) | Utilize the method for original state electrolytic manganese residues and steel slag tailing slurry production activity of cement admixture | |
| CN105110660A (en) | Method for reducing, quenching and tempering molten steel slags in reducing atmosphere | |
| CN102019286B (en) | Method for treating steel slag tailings subjected to magnetic separation | |
| CN102355759A (en) | Charcoal electrode specially used in smelting of ferroalloy and preparation method thereof | |
| CN102815731A (en) | Smelting technique of brown corundum | |
| CN101935176B (en) | Method for preparing conductive admixture from pyrite smelting slag | |
| CN105039626B (en) | A kind of vanadium slag preparation method | |
| CN104529323B (en) | A kind of heat resistance concrete that full weight slag aggregate is prepared with Portland cement | |
| CN105390211B (en) | Production technology of high-strength electrode paste | |
| CN102633515B (en) | Magnesium-forsterite synthetic sand and preparation method thereof | |
| CN103602773A (en) | Method for comprehensive utilization of paigeite through direct reduction-electric furnace melting separation of rotary hearth furnace | |
| CN101602609B (en) | Method for preparing Fe-Si3N4 fireproof raw material | |
| CN107721440B (en) | Forsterite-spinel-carbon conductive refractory material and preparation method thereof | |
| CN103627834A (en) | New technology for extracting iron and producing titanium slag by direct reduction of ilmenite | |
| CN101638703A (en) | Method for directly reducing nickel containing pig iron by lateritic nickel in tunnel kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111221 |