CN202968145U - Equipment for producing calcium oxide by using calcium sulfate - Google Patents
Equipment for producing calcium oxide by using calcium sulfate Download PDFInfo
- Publication number
- CN202968145U CN202968145U CN 201220634755 CN201220634755U CN202968145U CN 202968145 U CN202968145 U CN 202968145U CN 201220634755 CN201220634755 CN 201220634755 CN 201220634755 U CN201220634755 U CN 201220634755U CN 202968145 U CN202968145 U CN 202968145U
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- equipment
- calcium oxide
- screw rod
- screw
- calcium sulfate
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- Expired - Lifetime
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Abstract
The utility model provides equipment for producing calcium oxide by using calcium sulfate. The equipment for comprises a master motor, a frame, a reduction gearbox, a charging barrel with a hopper, a screw, a vacuum pumping system, a die head and an air conveying system, wherein the master motor is connected with the screw through the reduction gearbox; the screw is arranged inside the charging barrel; the diameter of the screw is 25-35mm; the draw ratio of the screw is 25-40; the vacuum pumping system is arranged at the position which is 6D-12D away from the tail end of the charging barrel; the air conveying system is connected with the die head and is sealed; the charging barrel and the screw are made of a heat-resisting material which can resists a high temperature which is over 2000 DEG C; the equipment for producing calcium oxide by using calcium sulfate is of a single-screw structure; and the air conveying system is of a completely closed structure. The equipment has the advantages that heating speed is high, the material is heated uniformly, heating effect is good, no secondary impurities enter the entire process; and the purity of the calcium oxide can be up to 85%. In addition, the equipment disclosed by the utility model can be used for continuous production of the calcium oxide by using the calcium sulfate; and the production efficiency can be greatly improved.
Description
Technical field
The utility model relates to a kind of equipment of producing calcium oxide, especially relates to the equipment that a kind of calcium sulfate is produced calcium oxide.
Background technology
Traditional calcium oxide production method mainly take Wingdale as raw material, adopts the shaft furnace calcining, with in Wingdale and solid fuel mixes or layering is packed into kiln, calcines.The equipment volume that this method needs is large, also easily introduces secondary impurities, reduce the purity of product, and the efficiency ratio of producing is lower.
Application number is 200810064141.4 Chinese invention patent, disclose a kind of take the high purity marble as raw material, calcium oxide production method take gas or solid fuel as thermal source, ore is packed in tunnel furnace, the kiln of falling the cigarette, rolling plate kiln or drawer kiln, reduced to a certain extent the introducing of new impurity, substantially reached cleaner production, but this production technique is wayward, production cost is higher.
Application number is 200810063043.9 Chinese invention patent, discloses a kind of ultra-fine calcium oxide production technique take dolomite as raw material, operate relatively numerous and diverse, and the more difficult control of technological process, particularly for calcium sulfate, this method is difficult to possible.
The utility model content
The technical problems to be solved in the utility model is, overcomes the deficiencies in the prior art, and a kind of simple to operate, equipment that calcium sulfate that do not introduce impurity is produced calcium oxide is provided.
The technical scheme that the utility model solve the technical problem employing is:
The calcium sulfate of the utility model is produced the equipment of calcium oxide, comprises main motor, frame, reduction box, the barrel with hopper, screw rod, vacuum-pumping system, die head, blast system, and described frame is used for supporting whole system; Main motor is connected with screw rod by reduction box, described screw rod is installed in barrel, the diameter of screw rod is 25-35 mm, length-to-diameter ratio is 20-40(preferred 35), vacuum-pumping system is positioned at apart from the position of barrel end 6D-12D, and wherein 6D, 12D refer to 6,12 screw diameter length, and die head is connected with barrel by flange, blast system is connected with die head, and sealing; Described barrel and screw rod adopt and can make by anti-high temperature material more than 2000 ℃; Described high temperature material preferable alloy pottery or refractory metal alloy; The equipment that described calcium sulfate is produced calcium oxide adopts single screw-rod structure; Described blast system adopts full-closed structure, and the wind body medium of supplying gas is rare gas element.
Described D is the diameter of screw rod.
Working process: first calcium sulfate is pulverized, then by hopper, Powdered calcium sulfate is added feeding cylinder, in barrel, calcium sulphate powders is calcined, make calcium sulfate at high temperature occur to decompose and generate calcium oxide, sulfurous gas and oxygen.The product calcium oxide through screw rod transmission to die head, then by the blast system that is connected with die head to product carry out cooling, carry packing then.Gaseous sulfur dioxide and oxygen are extracted out by vacuum-pumping system, and by product sulfurous gas can absorb with NaOH solution, generates S-WAT; Or for the preparation of sulfuric acid.
Specifically, use the equipment of the calcium sulfate production calcium oxide of the utility model to carry out comprising the following steps with the technique of calcium sulfate as the raw material production calcium oxide:
(1) calcium sulfate is ground into the powder of 100-1000 order (preferred 400-600 order);
(2) heating cylinder and screw rod, when temperature reaches 1000-1800 ℃ (preferred 1200-1500 ℃), the preferred 25-100 min of insulation 20-120 min(; More preferably 30-50 min);
(3) step (1) gained calcium sulphate powders is added material bin, start main motor, the rotating speed of screw rod is the preferred 2-10rpm of 1-20 rpm(; More preferably 3-5rpm), open simultaneously vacuum-pumping system;
(4) when product is extruded in the die head, utilize the blast system conveying products of sealing.
Step (2) is for to add calcium sulphate powders screw rod and barrel to be carried out the step of preheating, and purpose is to make material to add material bin and just can produces; The preheating insulation time is longer, is because screw rod and barrel have certain thermal inertia, and the temperature measurement location of thermopair only has a bit, is incubated by the long period, can make screw rod reach consistent with the temperature at each position of barrel, and the temperature of each several part is more even.
Adopt the utility model, rate of heating is fast, and material is heated evenly, and heats is good, and whole process is not introduced secondary impurities, and the purity of calcium oxide is up to 85%.In addition, the utility model can be realized the serialization production of calcium sulfate production calcium oxide, can greatly enhance productivity.
Description of drawings
Fig. 1 is the device structure schematic diagram that calcium sulfate is produced calcium oxide.
(1, main motor; 2, reduction box; 3, hopper; 4, screw rod; 5, barrel; 6, vacuum-pumping system; 7, die head; 8, blast system; 9, flange; 10, frame)
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The present embodiment comprises main motor 1, frame 10, reduction box 2, the barrel 5 with hopper 3, screw rod 4, vacuum-pumping system 6, die head 7, blast system 8, and described frame 10 is used for supporting whole system; Main motor 1 is connected with screw rod 4 by reduction box 2, and screw rod 4 is installed in barrel 5, and the diameter of screw rod is 30 mm, length-to-diameter ratio is 35, and vacuum-pumping system 6 is positioned at apart from the position of barrel 5 end 190mm, and die head 7 is connected with barrel 4 by flange 9, blast system 8 is connected with die head 7, and sealing.Described barrel 5 and screw rod 4 adopt can be anti-more than 2000 ℃ the high temperature material sintering metal of high temperature make; Described screw rod adopts single screw-rod structure, and described blast system adopts full-closed structure, and the wind body medium of supplying gas is nitrogen.
Working process: first calcium sulfate is pulverized, then by hopper 3, Powdered calcium sulfate is added feeding cylinder 5, in barrel 5, calcium sulphate powders is calcined, make calcium sulfate issue solution estranged at 1000-1800 ℃, generate calcium oxide, sulfurous gas and oxygen; The product calcium oxide is delivered to die head 7 by screw rod 4, then is undertaken coolingly by the 8 pairs of product calcium oxide of blast system that are connected with die head 7, refills bag packing.Gaseous sulfur dioxide and oxygen are extracted out and are passed in NaOH solution by vacuum-pumping system 6, and sulfurous gas is absorbed by NaOH solution, generate S-WAT.
In the present embodiment, calcium sulfate is ground into the powder production calcium oxide, rate of heating is fast, and heats is good, and material is heated evenly, and whole process is not introduced secondary impurities, and the purity of calcium oxide is up to more than 85%.In addition, can also realize the serialization production of calcium sulfate production calcium oxide, can enhance productivity.
Claims (3)
1. the equipment of a calcium sulfate production calcium oxide, is characterized in that, comprises main motor, frame, reduction box, the barrel with hopper, screw rod, vacuum-pumping system, die head, blast system, and described frame is used for supporting whole system; Main motor is connected with screw rod by reduction box, and described screw rod is installed in barrel, and the diameter of screw rod is 25-35 mm, the length-to-diameter ratio of screw rod is 25-40, and vacuum-pumping system is positioned at apart from the position of barrel end 6D-12D, and die head is connected with barrel by flange, blast system is connected with die head, and sealing; Described barrel and screw rod adopt and can make by anti-high temperature material more than 2000 ℃; The equipment that described calcium sulfate is produced calcium oxide adopts single screw-rod structure; Described blast system adopts full-closed structure;
Described D is the diameter of screw rod.
2. calcium sulfate according to claim 1 is produced the equipment of calcium oxide, it is characterized in that, the length-to-diameter ratio of described screw rod is 35.
3. calcium sulfate according to claim 1 and 2 is produced the equipment of calcium oxide, it is characterized in that, described high temperature material is sintering metal or refractory metal alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634755 CN202968145U (en) | 2012-11-27 | 2012-11-27 | Equipment for producing calcium oxide by using calcium sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634755 CN202968145U (en) | 2012-11-27 | 2012-11-27 | Equipment for producing calcium oxide by using calcium sulfate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202968145U true CN202968145U (en) | 2013-06-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220634755 Expired - Lifetime CN202968145U (en) | 2012-11-27 | 2012-11-27 | Equipment for producing calcium oxide by using calcium sulfate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202968145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030164A (en) * | 2012-11-27 | 2013-04-10 | 刘立文 | Technique and apparatus for producing calcium oxide from calcium sulfate |
-
2012
- 2012-11-27 CN CN 201220634755 patent/CN202968145U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030164A (en) * | 2012-11-27 | 2013-04-10 | 刘立文 | Technique and apparatus for producing calcium oxide from calcium sulfate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130605 Effective date of abandoning: 20150311 |
|
| RGAV | Abandon patent right to avoid regrant |