CN202126180U - Muffle furnace - Google Patents
Muffle furnace Download PDFInfo
- Publication number
- CN202126180U CN202126180U CN201120222455XU CN201120222455U CN202126180U CN 202126180 U CN202126180 U CN 202126180U CN 201120222455X U CN201120222455X U CN 201120222455XU CN 201120222455 U CN201120222455 U CN 201120222455U CN 202126180 U CN202126180 U CN 202126180U
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- furnace
- muffle furnace
- air inlet
- inlet pipe
- burner hearth
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Abstract
The utility model discloses a muffle furnace, which comprises a furnace body and a furnace door. The furnace body is mainly composed of a furnace cavity and a furnace casing. A smoke discharging pipe is arranged at the top or on the rear side of the furnace body, and an air inlet pipe communicated with the furnace cavity is arranged at the bottom of the furnace body. The air inlet pipe is added based on an ordinary muffle furnace, and an air circulation loop between the furnace cavity and the outside is formed by the air inlet pipe and the smoke discharging pipe. Oxygen continuously obtained from the outside can be supplied to materials in the furnace cavity during oxidizing roasting, thereby enabling an oxidizing roasting effect to be faster and more sufficient. The muffle furnace is particularly suitable for ore analysis with high sulfur and high carbon of a mine.
Description
Technical field
The utility model relates to Industrial Analysis and uses roasting apparatus, especially a kind of Muffle furnace.
Background technology
Muffle furnace is a laboratory equipment commonly used in the Industrial Analysis process, and body of heater mainly comprises furnace shell, burner hearth and fire door.Wherein, burner hearth is the hollow cavity that is positioned at the body of heater center, and it is the operating room of Muffle furnace, and cavity bottom is equipped with electric heater unit (electric furnace heating wire or graphite rod), and the chamber wall adopts refractory material to construct; Furnace shell is generally made with metal material, between furnace shell and the burner hearth flame retardant coating heat-insulation layer by filled thermal insulation materials is arranged.Common Muffle furnace is provided with smoke exhaust pipe at body of heater top or rear side, is used to discharge the flue gas that the roasting material produces, and with regard to simple roasting material, this kind structure suits.Yet strong oxidation reaction also can take place in the ore that contains high-sulfur, high charcoal in roasting, and this not only need discharge a large amount of SO
2, CO
2Deng, also will in burner hearth, provide fresh air with satisfied demand continuously, otherwise oxidation is difficult to continue smoothly to carry out to oxygen.Simultaneously, under the hot conditions, air significantly expands and thins out in the burner hearth, though smoke exhaust pipe is in communication with the outside burner hearth, fails to constitute effective loop of circulation of air, and the material oxidation is slow and insufficient in the burner hearth.Thereby even in 600～700 ℃ of roasting high-sulfurs, high charcoal ore 2 hours, oxidation effectiveness is still not satisfactory.
The utility model content
The technical problem that the utility model will solve provides and a kind ofly can continue oxygenating and make oxidizing roasting Muffle furnace more fast fully, to satisfy the demand of the ore Industrial Analysis that contains high-sulfur, high charcoal.
Adopt following technical scheme for solving the problems of the technologies described above: a kind of Muffle furnace, comprise body of heater and fire door, body of heater mainly is made up of burner hearth and furnace shell, and body of heater top or rear side are provided with smoke exhaust pipe, and bottom of furnace body is provided with the air inlet pipe that is communicated with burner hearth.
Burner hearth is provided with flame retardant coating, is provided with heat-insulation layer between flame retardant coating and the furnace shell, and air inlet pipe runs through flame retardant coating, heat-insulation layer, furnace shell from burner hearth and is in communication with the outside.
Air inlet pipe is an earthenware.
The utility model is transformed on the basis of common Muffle furnace; Increased the air inlet pipe that is communicated with burner hearth at bottom of furnace body; Make it constitute the circulation of air loop between the burner hearth and the external world with original smoke exhaust pipe; Can obtain the material oxidizing roasting process in the oxygen supply supply burner hearth from the external world continuously, thereby impel the oxidizing roasting effect more fast fully.The utility model is particularly useful for the ore assay that the mine contains high-sulfur, high charcoal.
Description of drawings
Fig. 1 is the structural representation (only having body of heater not have fire door) of the utility model Muffle furnace.
Fig. 2 is the vertical view of Muffle furnace among Fig. 1.
Fig. 3 is the side view of Muffle furnace among Fig. 1.
Among the figure: 1 fire door, 2 burner hearths, 3 furnace shells, 4 flame retardant coatings, 5 electric furnace heating wires, 6 heat-insulation layers, 7 smoke exhaust pipes, 8 air inlet pipe.
The specific embodiment
To shown in Figure 3, the Muffle furnace of the utility model comprises body of heater and fire door 1 like Fig. 1, and body of heater mainly is made up of burner hearth 2 and furnace shell 3, and burner hearth 2 is provided with flame retardant coating 4 all around, electric furnace heating wire 5 is equipped with in the bottom, is provided with heat-insulation layer 6 between flame retardant coating 4 and the furnace shell 3; Body of heater top or rear side are provided with smoke exhaust pipe 7, and bottom of furnace body is provided with the air inlet pipe 8 (earthenware) that is communicated with burner hearth 2, and air inlet pipe 8 runs through flame retardant coating 4, heat-insulation layer 6, furnace shell 3 from burner hearth 2 and is in communication with the outside.
Above-mentioned Muffle furnace can adopt common Muffle furnace to convert, and concrete operations are: at first on burner hearth and furnace shell, accurately confirm the position of air inlet pipe, with electric drill boring, earthenware is installed in the hole, earthenware peripheral clearance is tamped with kaolin mud get final product then.
For comparing the roasting effect of the utility model and common Muffle furnace; The inventor adopts 19 high-sulfur gold ore samples of Guangxi Zhang Jiawan gold mine to compare test: earlier each sample splitting is become three parts of A, B, C; Wherein, A appearance directly send laboratory chemical examination sulphur (S) content as a reference value, and B appearance and C appearance use the utility model and common Muffle furnace respectively behind 670 ℃ of roasting 2h; Chemically examine sulphur (S) content again, result of laboratory test and a reference value are compared like following table 1.
Table 1 the utility model and common Muffle furnace roasting effect are relatively
Visible by last table, the baked sample of Muffle furnace of employing the utility model, its sulfur content is starkly lower than the sample that common Muffle furnace is handled.Therefore, the Muffle furnace oxidizing roasting effect of the utility model is superior to common Muffle furnace.
Claims (3)
1. a Muffle furnace comprises body of heater and fire door, and body of heater mainly is made up of burner hearth and furnace shell, and body of heater top or rear side are provided with smoke exhaust pipe, it is characterized in that: said bottom of furnace body is provided with the air inlet pipe that is communicated with burner hearth.
2. Muffle furnace according to claim 1 is characterized in that: said burner hearth is provided with flame retardant coating, is provided with heat-insulation layer between flame retardant coating and the furnace shell, and said air inlet pipe runs through flame retardant coating, heat-insulation layer, furnace shell from burner hearth and is in communication with the outside.
3. Muffle furnace according to claim 1 and 2 is characterized in that: said air inlet pipe is an earthenware.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120222455XU CN202126180U (en) | 2011-06-28 | 2011-06-28 | Muffle furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120222455XU CN202126180U (en) | 2011-06-28 | 2011-06-28 | Muffle furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202126180U true CN202126180U (en) | 2012-01-25 |
Family
ID=45489245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120222455XU Expired - Fee Related CN202126180U (en) | 2011-06-28 | 2011-06-28 | Muffle furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202126180U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892410A (en) * | 2020-08-04 | 2020-11-06 | 山东嘉和耐火材料有限责任公司 | Preparation process and equipment of novel low-creep inorganic nonmetal new material |
-
2011
- 2011-06-28 CN CN201120222455XU patent/CN202126180U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892410A (en) * | 2020-08-04 | 2020-11-06 | 山东嘉和耐火材料有限责任公司 | Preparation process and equipment of novel low-creep inorganic nonmetal new material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20150628 |
|
| EXPY | Termination of patent right or utility model |