CN205209249U - Rotary kiln is with resistant firebrick of porous basicity - Google Patents
Rotary kiln is with resistant firebrick of porous basicity Download PDFInfo
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- CN205209249U CN205209249U CN201520893480.9U CN201520893480U CN205209249U CN 205209249 U CN205209249 U CN 205209249U CN 201520893480 U CN201520893480 U CN 201520893480U CN 205209249 U CN205209249 U CN 205209249U
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Abstract
Rotary kiln is with resistant firebrick of porous basicity, resistant firebrick openly be rectangle or square, and the side be isosceles trapezoid, are equipped with arbitrary interior angle both sides arbitrary kind in with trapezoidal hole, triangle -shaped hole, rectangular hole, arch hole and the crescent hole of cambered surface transitional coupling at the within range of resistant firebrick lower part third height, and thermal -insulated hole is through -hole or blind hole, and thermal -insulated hole is the variable cross section hole, and at thermal -insulated downthehole packing refractory material, refractory material's size and thermal -insulated hole are identical, directly inlay the packing downthehole. The utility model discloses having reduced the heat transfer of heat in the resistant firebrick of basicity, having reduced heat transfer speed, reduced stress concentration, increase of service life reduces the thermal energy volume, and furthest has remain alkaline resistant firebrick's intensity, and market prospect is wide.
Description
Technical field
The utility model relates to a kind of refractory brick, is specifically related to a kind of rotary kiln porous alkaline refractory brick.
Background technology
Refractory brick has the superior functions such as high, high temperature resistant, the wear-resistant and antiscour of intensity, is widely used in the industries such as iron and steel, building materials, coloured hot industry furnace lining.Hot industry furnace lining refractory brick used is generally divided into hot junction working face and cold junction non-working surface, for guaranteeing safe operation, when many kiln hot junctions working face refractory brick often using certain residual thickness, just stopping kiln maintenance, being changed.For improving the resistance to elevated temperatures of kiln, the bulk density and the elevated temperature strength that make refractory brick want high, and thermomechanical property is good, but because of the fine and close thermal conductivity of material also high, in hot operation kiln body, amount of heat is passed to body of heater surface, and thermal loss is large, and energy consumption is high.
In order to improve the effect of heat insulation of refractory brick, a kind of insulating fire brick with hollow structure is proposed in utility model CN204100812U, the technical scheme adopted is processed with hollow cavity in 1/2nd scopes of insulating fire brick close to non-working surface side, can reduce kiln surface temperature 50-200 DEG C, energy-saving effect is obvious.This scheme is well used in aluminium silicon system refractory brick, but cannot be utilized preferably in basic firebrick field, main because aluminium silicon system refractory brick with mullite, alumina, zircon sand, carborundum etc. for raw material, the refractory brick intensity made is far away higher than the intensity of basic firebrick, and the expansion rate of aluminium silicon system refractory brick is less, and the expansion rate of basic firebrick is larger, so there is the intensity of the aluminium silicon system refractory brick of hollow cavity still can meet the requirement of stove, there is the basic firebrick of hollow cavity then can not meet the requirement of strength of kiln.
Summary of the invention
The utility model effectively cannot implement the problems such as heat-insulation and heat-preservation to Industrial Stoves for existing basic firebrick, provides a kind of basic firebrick of rotary kiln porous cross structure.Refractory brick of the present utility model has good heat insulating function, and kiln surface temperature can be made to reduce 40-300 DEG C, changes path and the direction of heat flow, and dispersion thermal stress, reduces thermal expansion amount, extends the basic firebrick life-span, wide market.
The technical scheme that the utility model is taked is as follows:
Porous alkaline refractory brick described in the utility model, front is rectangle or square, side is isosceles trapezoid, is provided with any one in trapezoidal hole that any one interior angle both sides connects with cambered surface transition, tri-angle-holed, rectangular opening, arch hole and crescent hole in the scope of refractory brick bottom 1/3rd height.
Described porous alkaline refractory brick, is provided with two or more pore structures in the scope of refractory brick bottom 1/3rd.
Described porous alkaline refractory brick, trapezoidal hole, tri-angle-holed, rectangular opening, arch hole and crescent hole are through hole or blind hole.
Described porous alkaline refractory brick, trapezoidal hole, tri-angle-holed, rectangular opening, arch hole and crescent hole are variable cross-section hole.
Described porous alkaline refractory brick, cambered surface be in arc surface, elliptical arc surface and parabola cambered surface any one.
Described porous alkaline refractory brick, insulation hole arrangement mode is unrestricted, can regularly arranged or irregular alignment.
Described porous alkaline refractory brick, light filling fireclay insulating refractory in insulation hole: glass fibre, rock wool, alumina silicate fibre, drift pearl, alumina hollow ball, perlite, haydite; The size of heat-barrier material and insulation hole coincide, and directly inlay and are filled in insulation hole.
Compared with prior art, the utility model has following positive beneficial effect:
1, insulation hole is placed in non-working surface end 1/3rd scope by the utility model, adds the used thickness of hot side working end, extends the service life of refractory brick.
2, insulation hole of the present utility model is set to trapezoidal hole, tri-angle-holed, rectangular opening, arch hole or crescent hole, and the transition of each interior angle cambered surface, significantly falls stress concentration, improves the life-span of refractory brick; Demoulding workshop section after refractory brick punch forming, because insulation hole presents up-small and down-big variable section structure, the easy demoulding, reduces the frictional force between shaping rear knockout course core rod and adobe, improves shaping efficiency; In addition, frictional force is excessive easily causes crackle waste product, and adopt this type of insulation hole, the percent defective of refractory brick significantly reduces, and improves production efficiency.
3, the utility model solves a difficult problem for existing basic firebrick effect of heat insulation difference, remains the intensity of basic firebrick to greatest extent.
Accompanying drawing explanation
Fig. 1-1 contains the front view of rotary kiln with porous alkaline refractory brick of two trapezoidal holes;
Fig. 1-2 contains the left view of rotary kiln with porous alkaline refractory brick of two trapezoidal holes;
The enlarged drawing in Fig. 1-3 trapezoidal hole cross section;
Fig. 2-1 contains the front view of rotary kiln with porous alkaline refractory brick in two arch holes;
Fig. 2-2 contains the left view of rotary kiln with porous alkaline refractory brick in two arch holes;
The enlarged drawing in cross section, Fig. 2-3 arch hole;
Fig. 3-1 contains the front view of rotary kiln with porous alkaline refractory brick in two crescent holes;
Fig. 3-2 contains the left view of rotary kiln with porous alkaline refractory brick in two crescent holes;
The enlarged drawing in cross section, Fig. 3-3 crescent hole;
Fig. 4-1 is containing the front view of three tri-angle-holed rotary kiln porous alkaline refractory brick;
Fig. 4-2 is containing the left view of three tri-angle-holed rotary kiln porous alkaline refractory brick;
The enlarged drawing in the tri-angle-holed cross section of Fig. 4-3;
Fig. 5-1 contains the front view of rotary kiln with porous alkaline refractory brick of four trapezoidal holes;
Fig. 5-2 contains the left view of rotary kiln with porous alkaline refractory brick of four trapezoidal holes;
The enlarged drawing in Fig. 5-3 trapezoidal hole cross section;
Fig. 6-1 contains the front view of rotary kiln with porous alkaline refractory brick of five rectangular openings;
Fig. 6-2 contains the left view of rotary kiln with porous alkaline refractory brick of five rectangular openings;
The enlarged drawing in Fig. 6-3 rectangular opening cross section.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, with the following Examples and accompanying drawing, the utility model is described in further detail, but protection domain of the present utility model is not limited to following embodiment.
Embodiment 1
Containing the rotary kiln structure chart of porous alkaline refractory brick of two trapezoidal holes, as shown in Fig. 1-1,1-2,1-3, Fig. 1-1 is the front view of the rotary kiln porous alkaline refractory brick containing two trapezoidal holes, Fig. 1-2 is the left view of the rotary kiln porous alkaline refractory brick containing two trapezoidal holes, and Fig. 1-3 is the enlarged drawings in trapezoidal hole cross section.In Fig. 1-1, numbering 1 represents basic firebrick, the hot junction of 2 expression refractory brick, i.e. working face end, and 4 represent cold junction, i.e. non-working surface ends, and 3 represent trouble free service faces, and be positioned at apart from cold junction 1/3rd place, 5,6 is trapezoidal hole, and is all variable cross-section through holes.Filled glass fiber 7 in hole 5,6.
This embodiment, is placed in insulation hole in non-working surface end 1/3rd scope, and what add refractory brick can use amount, improves the service life of refractory brick; In addition, insulation hole is offered into trapezoidal, demoulding workshop section after refractory brick punch forming, because insulation hole presents up-small and down-big prismatoid, reduces the frictional resistance in knockout course, improve shaping efficiency, in addition, frictional force is excessive easily causes crackle waste product, adopts this type of insulation hole, the percent defective of refractory brick significantly reduces, and improves production efficiency.
In the present embodiment, the surrounding of trapezoidal hole is by circular sliding slopes, and the enlarged drawing in hole 5 and hole 6 as Figure 1-3.Adopt this kind of connected mode, mainly because: there are two acute corners and two acute angle corners in trapezium structure, this type of turning easily point effect occurs when pressure-bearing, produce stress concentrate.
Embodiment 2
Containing the rotary kiln structure chart of porous alkaline refractory brick in two arch holes, as shown in Fig. 2-1,2-2,2-3, Fig. 2-1 is the front view of the rotary kiln porous alkaline refractory brick containing two arch holes, Fig. 2-2 is left views of the rotary kiln porous alkaline refractory brick containing two arch holes, and Fig. 2-3 is the enlarged drawings in cross section, arch hole.In Fig. 2-1, numbering 1 represents basic firebrick, the hot junction of 2 expression refractory brick, i.e. working face end, and 4 represent cold junction, i.e. non-working surface ends, and 3 represent trouble free service faces, and be positioned at apart from cold junction 1/3rd place, 8,9 is arch hole, and is all variable cross-section through holes.Filled glass fiber 7 in hole 8,9.
In the present embodiment, for eliminating point effect, the surrounding in arch hole is connected by arc surface.
Embodiment 3
Containing the rotary kiln structure chart of porous alkaline refractory brick in two crescent holes, as shown in Fig. 3-1,3-2,3-3, Fig. 3-1 is the front view of the rotary kiln porous alkaline refractory brick containing two crescent holes, Fig. 3-2 is left views of the rotary kiln porous alkaline refractory brick containing two crescent holes, and Fig. 3-3 is the enlarged drawings in cross section, crescent hole.In Fig. 3-1, numbering 1 represents basic firebrick, the hot junction of 2 expression refractory brick, i.e. working face end, and 4 represent cold junction, i.e. non-working surface ends, and 3 represent trouble free service faces, and be positioned at apart from cold junction 1/3rd place, 10,11 is crescent hole, and is all variable cross-section through holes.Alumina hollow ball 15 is filled in hole 10,11.
In the present embodiment, for eliminating point effect, the two ends in crescent hole are connected by arc surface.
Embodiment 4
Containing the structure chart of three tri-angle-holed rotary kiln porous alkaline refractory brick, as shown in Fig. 4-1,4-2,4-3, Fig. 4-1 is the front view containing three tri-angle-holed rotary kiln porous alkaline refractory brick, Fig. 4-2 is the left views containing three tri-angle-holed rotary kiln porous alkaline refractory brick, and Fig. 4-3 is the enlarged drawings in tri-angle-holed cross section.In Fig. 4-1, numbering 1 represents basic firebrick, the hot junction of 2 expression refractory brick, i.e. working face end, and 4 represent cold junctions, i.e. non-working surface end, 3 represent trouble free service face, are positioned at apart from cold junction 1/3rd place, 12,13,14 is tri-angle-holed, and 13 is variable cross-section through hole, and 12,14 is variable cross-section blind hole.Rock wool 25 is filled in hole 12,13,14.
In the present embodiment, tri-angle-holed surrounding is by circular sliding slopes, and for hole 13, the enlarged drawing in hole 13 is as shown in Fig. 4-3.Adopt this kind of connected mode, mainly because: in triangular structure exist three acute angles, when pressure-bearing, easily there is point effect in this type of angle, produce stress concentrate.
Embodiment 5
Containing the rotary kiln structure chart of porous alkaline refractory brick of four trapezoidal holes, as shown in Fig. 5-1,5-2,5-3, Fig. 5-1 is the front view of the rotary kiln porous alkaline refractory brick containing four trapezoidal holes, Fig. 5-2 is left views of the rotary kiln porous alkaline refractory brick containing four trapezoidal holes, and Fig. 5-3 is the enlarged drawings in trapezoidal hole cross section.In Fig. 5-1, numbering 1 represents basic firebrick, the hot junction of 2 expression refractory brick, i.e. working face end, and 4 represent cold junction, i.e. non-working surface ends, and 3 represent trouble free service faces, and be positioned at apart from cold junction 1/3rd place, 16,17,18,19 is trapezoidal hole, and is variable cross-section through hole.Alumina hollow ball 15 is filled in hole 16,17,18,19.
In the present embodiment, for eliminating point effect, the surrounding of trapezoidal hole is connected by arc surface.
Embodiment 6
Containing the rotary kiln structure chart of porous alkaline refractory brick of five rectangular openings, as shown in Fig. 6-1,6-2,6-3, Fig. 6-1 is the front view of the rotary kiln porous alkaline refractory brick containing five rectangular openings, Fig. 6-2 is left views of the rotary kiln porous alkaline refractory brick containing five rectangular openings, and Fig. 6-3 is the enlarged drawings in rectangular opening cross section.In Fig. 6-1, numbering 1 represents basic firebrick, the hot junction of 2 expression refractory brick, i.e. working face end, 4 represent cold junction, i.e. non-working surface end, and 3 represent trouble free service face, be positioned at apart from cold junction 1/3rd place, 20,21,22,23,24 is rectangular opening, and is variable cross-section through hole.Filled glass fiber 7 in hole 20,21,22,23,24.
In the present embodiment, for eliminating point effect, the surrounding of rectangular opening is connected by arc surface.
Claims (6)
1. rotary kiln porous alkaline refractory brick, described refractory brick front is rectangle or square, side is isosceles trapezoid, it is characterized in that, in the scope of refractory brick bottom 1/3rd height, be provided with any one in trapezoidal hole that any one interior angle both sides connects with cambered surface transition, tri-angle-holed, rectangular opening, arch hole and crescent hole.
2. rotary kiln porous alkaline refractory brick according to claim 1, it is characterized in that, in the scope of refractory brick bottom 1/3rd, be provided with any one in trapezoidal hole that two or more any one interior angle both sides connect with cambered surface transition, tri-angle-holed, rectangular opening, arch hole and crescent hole.
3. rotary kiln porous alkaline refractory brick according to claim 1, is characterized in that, trapezoidal hole, tri-angle-holed, rectangular opening, arch hole and crescent hole are through hole or blind hole.
4. rotary kiln porous alkaline refractory brick according to claim 1, is characterized in that, trapezoidal hole, tri-angle-holed, rectangular opening, arch hole and crescent hole are variable cross-section hole.
5. rotary kiln porous alkaline refractory brick according to claims 1 to 3, is characterized in that, light filling fireclay insulating refractory in insulation hole: glass fibre, rock wool, alumina silicate fibre, drift pearl, alumina hollow ball, perlite or haydite; The size of heat-barrier material and insulation hole coincide, and directly inlay and are filled in hole.
6. rotary kiln porous alkaline refractory brick according to claim 1, is characterized in that, described cambered surface be in arc surface, elliptical arc surface and parabola cambered surface any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520893480.9U CN205209249U (en) | 2015-11-11 | 2015-11-11 | Rotary kiln is with resistant firebrick of porous basicity |
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| CN201520893480.9U CN205209249U (en) | 2015-11-11 | 2015-11-11 | Rotary kiln is with resistant firebrick of porous basicity |
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| CN205209249U true CN205209249U (en) | 2016-05-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160361A (en) * | 2019-05-15 | 2019-08-23 | 方端霞 | A kind of insulating fire brick |
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2015
- 2015-11-11 CN CN201520893480.9U patent/CN205209249U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160361A (en) * | 2019-05-15 | 2019-08-23 | 方端霞 | A kind of insulating fire brick |
| CN110160361B (en) * | 2019-05-15 | 2020-04-07 | 东台市宏大耐热材料有限公司 | Heat-insulating refractory brick |
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