CN107560434B - Refractory lining combined brick for shaft kiln - Google Patents
Refractory lining combined brick for shaft kiln Download PDFInfo
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- CN107560434B CN107560434B CN201710943519.7A CN201710943519A CN107560434B CN 107560434 B CN107560434 B CN 107560434B CN 201710943519 A CN201710943519 A CN 201710943519A CN 107560434 B CN107560434 B CN 107560434B
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- 239000011449 brick Substances 0.000 title claims abstract description 288
- 239000002131 composite material Substances 0.000 claims description 10
- 210000001503 joint Anatomy 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to a combined brick for a refractory lining of a shaft kiln, which is used for being arranged at a door closing position on the refractory lining of the shaft kiln, wherein the door closing position is provided with four areas, the combined brick comprises a first support brick, a second support brick and a door closing lock brick positioned between the first support brick and the second support brick, the first support brick and the second support brick are oppositely arranged to form a cone-shaped space, and the door closing lock brick is positioned in the cone-shaped space. The invention ensures that the whole structure of the lining is very stable, and is beneficial to prolonging the service life of the lining.
Description
Technical Field
The invention relates to the technical field of refractory lining of a thermal furnace, in particular to a combined brick of refractory lining of a shaft kiln.
Background
The furnace refractory lining is a working surface for high-temperature calcination production of a thermal furnace, is a main structure of a double-hearth lime shaft kiln for bearing high temperature, and is generally composed of a steel structure and a refractory lining wrapping the steel structure, wherein the refractory lining protects the steel structure at the bottom from high-temperature air flow oxidation in the furnace and isolating materials on the one hand, and on the other hand, the furnace refractory lining is combined with the steel structure to bear the upper lining masonry.
Generally, an unshaped refractory material pouring structure and a prefabricated member hanging structure are mainly adopted in the refractory lining, compared with refractory bricks made of the same material, the unshaped refractory material pouring structure is poor in physical strength and wear resistance due to the influence of factors such as a forming process and post baking, limestone in a kiln chamber continuously falls from top to bottom to cause serious scouring abrasion at the place, and if the unshaped refractory material pouring structure is adopted, the baking time is long and the baking temperature and uniformity are not easy to control. And the large prefabricated member is adopted for hanging, so that the large prefabricated member has poor hanging effect because of no tension in the circumferential direction, and the prefabricated member easily falls off and loosens, so that the overall structure stability of the lining is affected.
In order to overcome the problems, the prior Chinese patent (105924024A) discloses a lime stone vertical kiln lining refractory brick which consists of an end gap wedge-shaped brick with a wedge-shaped structure, a kiln body wedge-shaped brick and a tail gap wedge-shaped brick, wherein the brick body at one side of the end gap wedge-shaped brick is a flat end face, two other adjacent side faces are provided with arc-shaped lugs which are parallel to each other, and the other side is provided with arc-shaped grooves which are parallel to each other; the kiln body wedge-shaped brick is characterized in that arc-shaped inserting blocks which are parallel to each other are prefabricated on adjacent side surfaces, and concave arc-shaped inserting grooves which are parallel to each other are prefabricated on the other adjacent side surfaces; the brick body at one side of the tail gap wedge-shaped brick is a flat end seam surface, the other two adjacent side surfaces are provided with arc-shaped side grooves which are parallel to each other, and the other one side is provided with arc-shaped raised strips which are parallel to each other; a plurality of kiln body wedge-shaped bricks which are in fit butt joint between the end gap wedge-shaped bricks and the tail gap wedge-shaped bricks form an annular structure; an expansion gap is reserved between the end face on the end gap wedge-shaped brick and the end seam face on the tail gap wedge-shaped brick. By adopting the refractory brick, the brick body has the positive effects of corrosion resistance, abrasion resistance and convenient masonry, but the integral structure of the lining formed by the refractory brick has poor stability.
Disclosure of Invention
Therefore, the invention aims to solve the technical problem of poor stability of the integral structure of the lining in the prior art, and further provides the vertical kiln fireproof lining combined brick with high stability of the integral structure of the lining and long service life.
In order to solve the technical problems, the invention provides a combined brick for a refractory lining of a shaft kiln, which is used for being installed at a door closing position on the refractory lining of the shaft kiln, wherein the door closing position is provided with four areas and is distributed on two mutually perpendicular central lines on a horizontal projection view of the shaft kiln, the combined brick comprises a first supporting brick, a second supporting brick and a door closing locking brick positioned between the first supporting brick and the second supporting brick, the first supporting brick and the second supporting brick are oppositely arranged to form a cone bucket-shaped space, and the door closing locking brick is positioned in the cone bucket-shaped space.
In one embodiment of the invention, a first protruding block is arranged on one surface of the first support brick, which is close to the door closing lock brick, a second protruding block is arranged on one surface of the second support brick, which is close to the door closing lock brick, the door closing lock brick comprises a first lock brick and a second lock brick adjacent to the first lock brick, a first groove which is in butt joint with the first protruding block is arranged on the first lock brick, and a second groove which is in butt joint with the second protruding block is arranged on the second lock brick.
In one embodiment of the present invention, the first support brick includes a first shaped brick, a second shaped brick and a third shaped brick, wherein the second shaped brick is located between the first shaped brick and the third shaped brick, the first bump is disposed on the first shaped brick, and hanging grooves are disposed on a surface of the first shaped brick, the second shaped brick and the third shaped brick opposite to the first bump.
In one embodiment of the invention, the hanging groove comprises a square groove and a round hole in the square groove, wherein the square groove is positioned on top of the first special-shaped brick, the second special-shaped brick and the third special-shaped brick.
In one embodiment of the present invention, a third groove is formed on a surface of the first special-shaped brick adjacent to the second special-shaped brick, a third bump abutting against the third groove and a fourth groove adjacent to the third special-shaped brick are formed on the second special-shaped brick, and a fourth bump abutting against the fourth groove are formed on the third special-shaped brick.
In one embodiment of the present invention, the horizontal cross-section of the third groove and the fourth groove is isosceles trapezoid.
In one embodiment of the invention, the door closing lock brick further comprises a third lock brick located between the first support brick and the second support brick, and the third lock brick is adjacent to the second profiled brick.
In one embodiment of the present invention, the first lock brick, the second lock brick, and the third lock brick each have an upper top surface dimension that is greater than a lower bottom surface dimension thereof.
In one embodiment of the invention, the first support tile is identical in structure to the second support tile.
In one embodiment of the present invention, the horizontal cross-sections of the first groove and the second groove are isosceles trapezoids.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the vertical kiln refractory lining combined brick has the characteristics of multiple hanging points of a hanging structure, high-pressure firing forming of the lining brick, abnormal and firm locking structure and the like, and the physical structure of the corner ring lining combined brick is stable, and the service life of the lining brick is long, so that the service life of the corner ring lining of the lime kiln is obviously prolonged.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
FIG. 1 is a top view of a shaft kiln according to the present invention;
FIG. 2 is a schematic perspective view of a refractory lining composite brick for a shaft kiln according to the present invention;
FIG. 3 is a schematic view of the first support tile and the second support tile of the present invention;
FIG. 4 is a view in the direction C of FIG. 3;
FIG. 5 is a view in the direction A of FIG. 3;
FIG. 6 is a view in the direction B of FIG. 3;
FIG. 7A is a schematic perspective view of a first lock brick according to the present invention;
FIG. 7B is a side view of a first lock brick according to the present invention;
FIG. 8A is a schematic perspective view of a second lock brick according to the present invention;
FIG. 8B is a side view of a second lock brick according to the present invention;
FIG. 9A is a schematic perspective view of a third lock brick according to the present invention;
fig. 9B is a side view of the third lock brick of the present invention.
Reference numerals: 1-vertical kiln, 10-hanging groove, 11-square groove, 12-round hole, 20-first support brick, 21-first special-shaped brick, 211-first lug, 22-second special-shaped brick, 221-third lug, 23-third special-shaped brick, 231-fourth lug, 30-second support brick, 311-second lug, 40-door closing brick, 41-first lock brick, 411-first groove, 42-second lock brick and 421-second groove.
Detailed Description
As shown in fig. 1 and 2 and fig. 3, the present embodiment provides a refractory lining composite brick for a shaft kiln, which is used for being installed at a door closing position on a refractory lining of the shaft kiln, wherein the door closing position has four areas, the four areas are distributed on two mutually perpendicular central lines in a horizontal projection view of the shaft kiln, the composite brick comprises a first support brick 20, a second support brick 30 and a door closing lock brick 40 located between the first support brick 20 and the second support brick 30, wherein the first support brick 20 and the second support brick 30 are oppositely arranged to form a cone-shaped space, and the door closing lock brick 40 is located in the cone-shaped space.
The embodiment the refractory lining composite brick of the vertical kiln is used for being installed at a door closing position on the refractory lining of the vertical kiln, wherein the door closing position is provided with four areas, the four areas are distributed on two mutually perpendicular central lines on a horizontal projection view of the vertical kiln 1, as in fig. 1, the positions of 0 DEG, 90 DEG, 180 DEG and 270 DEG on the horizontal projection view of the vertical kiln 1 are door closing positions, the composite brick comprises a first support brick 20, a second support brick 30 and a door closing lock brick 40 positioned between the first support brick 20 and the second support brick 30, wherein the first support brick 20 and the second support brick 30 are relatively arranged to form a cone bucket-shaped space, the door closing lock brick 40 is positioned in the cone bucket-shaped space, and can convert door closing force into supporting force in the horizontal direction.
In order to ensure tight connection between the combined bricks, a first protrusion 211 is disposed on a surface of the first support brick 20, which is close to the door closing lock brick 40, a second protrusion 311 is disposed on a surface of the second support brick 30, which is close to the door closing lock brick 40, the door closing lock brick 40 includes a first lock brick 41 and a second lock brick 42 adjacent to the first lock brick 41, and a first groove 411 abutting against the first protrusion 211 is disposed on the first lock brick 41, so as to realize fastening connection between the first support brick 20 and the first lock brick 41, and a second groove 421 abutting against the second protrusion 311 is disposed on the second lock brick 42, so as to realize fastening connection between the second support brick 30 and the second lock brick 42, and prevent the door closing lock brick 40 from moving in a horizontal radiation direction of a furnace core.
As shown in fig. 5 and 6, the first support brick 20 includes a first special-shaped brick 21, a second special-shaped brick 22 and a third special-shaped brick 23, where the second special-shaped brick 22 is located between the first special-shaped brick 21 and the third special-shaped brick 23, and the first protrusion 211 is disposed on the first special-shaped brick 21 and is vertically disposed along the inner side of the first special-shaped brick 21 from top to bottom, so as to realize the fastening connection between the first special-shaped brick 21 and the first lock brick 41, and the surfaces of the first special-shaped brick 21, the second special-shaped brick 22 and the third special-shaped brick 23 opposite to the first protrusion 211 are all provided with hanging grooves 10, and the hanging grooves of two adjacent groups of bricks are respectively spliced together to form a complete hanging groove structure, so that the first support brick 20 can be fixed on a metal hanger in the vertical kiln 1 through the hanging grooves 10, and the first support brick 20 is firmly attached in the vertical kiln.
The hanging groove 10 comprises a square groove 11 and a round hole 12 positioned in the square groove 11, wherein the square groove 11 is positioned at the top of the first special-shaped brick 21, the second special-shaped brick 22 and the third special-shaped brick 23, thereby being beneficial to fixing the first support brick 20 on the metal hanging piece. The surface of the first special-shaped brick 21 adjacent to the second special-shaped brick 22 is provided with a third groove, the second special-shaped brick 22 is provided with a third bump 221 butted with the third groove and a fourth groove adjacent to the third special-shaped brick 23, the first special-shaped brick 21 and the second special-shaped brick 22 are tightly combined through the cooperation of the third groove and the third bump 221, the third special-shaped brick 23 is provided with a fourth bump 231 butted with the fourth groove, and the tight combination of the second special-shaped brick 22 and the third special-shaped brick 23 is realized through the fourth groove and the fourth bump 231. The horizontal sections of the third groove and the fourth groove are isosceles trapezoids, which is convenient for manufacturing and processing, and is beneficial to matching with the third bump 221 and the fourth bump 231 respectively.
In this embodiment, the structure of the second supporting brick 30 is identical to the structure of the first supporting brick 20, the second supporting brick 30 includes a fourth special-shaped brick, a fifth special-shaped brick and a sixth special-shaped brick, and the fifth special-shaped brick is located between the fourth special-shaped brick and the sixth special-shaped brick, and the structures of the fourth special-shaped brick, the fifth special-shaped brick and the sixth special-shaped brick are identical to the structures of the first special-shaped brick 21, the second special-shaped brick 22 and the third special-shaped brick 23, so that description will not be repeated.
As shown in fig. 7A, 7B and 8A, 8B and 9A and 9B, the door closing brick 40 further includes a third locking brick 43 located between the first supporting brick 20 and the second supporting brick 30, and the third locking brick 43 is adjacent to the second profiled brick 22, so as to facilitate ensuring tight combination of the first supporting brick 20 and the second supporting brick 30 with the door closing brick 40. In this embodiment, the first lock brick 41, the second lock brick 42, and the third lock brick 43 form a combined door lock brick 40, and two combined door lock bricks 40 are disposed between the first support brick 20 and the second support brick 30. Specifically, a first locking brick 41 and a second locking brick 42 are arranged between the first special-shaped brick 21 and the fourth special-shaped brick, two third locking bricks 43 are arranged between the second special-shaped brick 22 and the fifth special-shaped brick, and a first locking brick 41 and a second locking brick 42 are arranged between the third special-shaped brick 23 and the sixth special-shaped brick.
Since the first support bricks 20 and the second support bricks 30 are disposed opposite to each other to form a cone-shaped space, the upper top surface of the first lock bricks 41 and the second lock bricks 42 is larger than the lower bottom surface, and the upper top surface of the third lock bricks 43 is larger than the lower bottom surface, so that the door closing lock bricks 40 can be fixed between the first support bricks 20 and the second support bricks 30. The horizontal cross-sections of the first groove 411 and the second groove 421 are isosceles trapezoids, so as to facilitate close fitting with the first bump 211 and the second bump 311, respectively.
In this embodiment, the hanging groove 10 is an open embedded groove, the depth of the square groove 11 is 9mm, the round hole 12 is formed by an outer hole and an inner hole, the diameter of the outer hole is larger than that of the inner hole, specifically, the diameter of the outer hole is 27mm, the diameter of the inner hole is 25mm, and the depth is 23mm. The vertical kiln refractory lining combined bricks are sequentially built from top to bottom from outside to inside, so that the combined lining structure is in a fastening state along the circumferential tangential direction. The joint surface between the first support brick 20 and the first lock brick 41 and the joint surface between the second support brick 30 and the second lock brick 42 are non-vertical surfaces passing through the shaft kiln core, and the top of the joint surface is inclined to the outside in two side directions. When closing the door, the door closing lock bricks 40 are placed into the cone-shaped space formed by the first support bricks 20 and the second support bricks 30 which are oppositely arranged from top to bottom, and the wedge-shaped structure converts the door closing force into the supporting force in the horizontal direction. When the door closing lock brick 40 is cut on site according to the actual space size, the machining surface is the middle joint surface of the first lock brick 41 and the second lock brick 42.
The first special-shaped brick 21 is close to the inside of the furnace, the horizontal section of the first lug 211 is isosceles trapezoid, the lengths of the upper bottom and the lower bottom are 45mm and 75mm respectively, and the height is 25mm; the first groove 411 is disposed along the inner surface of the first lock brick 41, and the horizontal section of the first groove 411 is isosceles trapezoid, and the upper bottom, the lower bottom and the height are 47mm, 77mm and 27mm respectively.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (6)
1. A combined brick of a refractory lining of a shaft kiln, which is used for being arranged at a door closing position on the refractory lining of the shaft kiln, wherein
The door closing position is provided with four areas which are distributed on two mutually vertical central lines on the horizontal projection view of the vertical kiln
Is characterized in that: the combined brick comprises a first support brick, a second support brick and a first support brick and a second support brick
The door closing lock bricks are arranged between the support bricks, wherein the first support bricks and the second support bricks are oppositely arranged to form a cone-shaped space, and the door closing lock bricks are positioned in the cone-shaped space;
a first protruding block is arranged on one surface, close to the door closing lock brick, of the first support brick, a second protruding block is arranged on one surface, close to the door closing lock brick, of the second support brick, the door closing lock brick comprises a first lock brick and a second lock brick adjacent to the first lock brick, a first groove in butt joint with the first protruding block is arranged on the first lock brick, and a second groove in butt joint with the second protruding block is arranged on the second lock brick;
the first support brick comprises a first special-shaped brick, a second special-shaped brick and a third special-shaped brick, wherein the second special-shaped brick is positioned between the first special-shaped brick and the third special-shaped brick, the first protruding block is arranged on the first special-shaped brick, and hanging grooves are formed in one surfaces, opposite to the first protruding block, of the first special-shaped brick, the second special-shaped brick and the third special-shaped brick;
the hanging grooves of the adjacent two groups of bricks are spliced two by two to form a complete hanging groove structure, and the hanging grooves can be used for connecting the bricks
The first support bricks are fixed on metal pendants in the shaft kiln, so that the first support bricks are firmly attached in the shaft kiln;
a third groove is formed in one surface of the first special-shaped brick, which is adjacent to the second special-shaped brick, a third lug which is in butt joint with the third groove and a fourth groove which is adjacent to the third special-shaped brick are formed in the second special-shaped brick, and a fourth lug which is in butt joint with the fourth groove are formed in the third special-shaped brick;
the door closing lock brick further comprises a third lock brick positioned between the first support brick and the second support brick, and the third lock brick is adjacent to the second special-shaped brick.
2. The refractory lining composite brick for a shaft kiln according to claim 1, wherein: the hanging groove comprises a square groove and a round hole positioned in the square groove, wherein the square groove is positioned at the tops of the first special-shaped brick, the second special-shaped brick and the third special-shaped brick.
3. The refractory lining composite brick for a shaft kiln according to claim 1, wherein: the horizontal sections of the third groove and the fourth groove are isosceles trapezoids.
4. The refractory lining composite brick for a shaft kiln according to claim 1, wherein: the upper top surface dimension of the first lock brick, the second lock brick and the third lock brick is larger than the lower bottom surface dimension thereof.
5. The refractory lining composite brick for a shaft kiln according to claim 1, wherein: the first support brick and the second support brick have the same structure.
6. The refractory lining composite brick for a shaft kiln according to claim 1, wherein: the horizontal sections of the first groove and the second groove are isosceles trapezoids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710943519.7A CN107560434B (en) | 2017-10-11 | 2017-10-11 | Refractory lining combined brick for shaft kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710943519.7A CN107560434B (en) | 2017-10-11 | 2017-10-11 | Refractory lining combined brick for shaft kiln |
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| Publication Number | Publication Date |
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| CN107560434A CN107560434A (en) | 2018-01-09 |
| CN107560434B true CN107560434B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710943519.7A Active CN107560434B (en) | 2017-10-11 | 2017-10-11 | Refractory lining combined brick for shaft kiln |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB448663A (en) * | 1935-09-09 | 1936-06-12 | Henry Victor Allen | Improvements relating to heat-insulating bricks or blocks for use in furnaces, kilns and the like |
| GB874391A (en) * | 1957-01-24 | 1961-08-10 | Thomas Marshall & Company Loxl | Composite insulating refractory bricks or blocks and linings thereof for furnaces and kilns |
| GB1129384A (en) * | 1965-09-24 | 1968-10-02 | Veitscher Magnesitwerke Ag | Improvements in brick linings for rotary kilns |
| CN86206718U (en) * | 1986-09-06 | 1987-10-03 | 冶金工业部武汉钢铁设计研究院 | Mother bricks of combined tube bricks and their combination form |
| US5069015A (en) * | 1989-10-10 | 1991-12-03 | Radex-Heraklith Industriebeteiligungs Aktiengesellschaft | Keystone set |
| CN201034415Y (en) * | 2006-10-18 | 2008-03-12 | 郑州豫兴耐火材料有限公司 | Warm-air duct Z-shaped composite brick |
| CN202613977U (en) * | 2012-05-17 | 2012-12-19 | 宜兴市海科耐火材料制品有限公司 | Up-down embedded type refractory brick |
| CN105924024A (en) * | 2016-06-21 | 2016-09-07 | 刘伟 | Fireproof brick for lining of limestone vertical kiln |
| CN207515530U (en) * | 2017-10-11 | 2018-06-19 | 上海宝冶建设工业炉工程技术有限公司 | Shaft furnace refractory lining modular tile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8967998B2 (en) * | 2011-05-05 | 2015-03-03 | Magnesita Refractories Company | Rotary kiln lining and method |
-
2017
- 2017-10-11 CN CN201710943519.7A patent/CN107560434B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB448663A (en) * | 1935-09-09 | 1936-06-12 | Henry Victor Allen | Improvements relating to heat-insulating bricks or blocks for use in furnaces, kilns and the like |
| GB874391A (en) * | 1957-01-24 | 1961-08-10 | Thomas Marshall & Company Loxl | Composite insulating refractory bricks or blocks and linings thereof for furnaces and kilns |
| GB1129384A (en) * | 1965-09-24 | 1968-10-02 | Veitscher Magnesitwerke Ag | Improvements in brick linings for rotary kilns |
| CN86206718U (en) * | 1986-09-06 | 1987-10-03 | 冶金工业部武汉钢铁设计研究院 | Mother bricks of combined tube bricks and their combination form |
| US5069015A (en) * | 1989-10-10 | 1991-12-03 | Radex-Heraklith Industriebeteiligungs Aktiengesellschaft | Keystone set |
| CN201034415Y (en) * | 2006-10-18 | 2008-03-12 | 郑州豫兴耐火材料有限公司 | Warm-air duct Z-shaped composite brick |
| CN202613977U (en) * | 2012-05-17 | 2012-12-19 | 宜兴市海科耐火材料制品有限公司 | Up-down embedded type refractory brick |
| CN105924024A (en) * | 2016-06-21 | 2016-09-07 | 刘伟 | Fireproof brick for lining of limestone vertical kiln |
| CN207515530U (en) * | 2017-10-11 | 2018-06-19 | 上海宝冶建设工业炉工程技术有限公司 | Shaft furnace refractory lining modular tile |
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| CN107560434A (en) | 2018-01-09 |
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Address after: No. 168, Siyuan Road, Baoshan District, Shanghai, 201900 Applicant after: SHANGHAI BAOYE METALLURGY ENGINEERING Co.,Ltd. Address before: No. 168, Siyuan Road, Baoshan District, Shanghai, 201900 Applicant before: SHANGHAI BAOYE CONSTRUCTION INDUSTRIAL FURNACE ENGINEERING TECHNOLOGY Co.,Ltd. |
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