CN105753491A - Blast furnace slag cement refractory castable used for pulverized coal boiler - Google Patents
Blast furnace slag cement refractory castable used for pulverized coal boiler Download PDFInfo
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- CN105753491A CN105753491A CN201610258866.1A CN201610258866A CN105753491A CN 105753491 A CN105753491 A CN 105753491A CN 201610258866 A CN201610258866 A CN 201610258866A CN 105753491 A CN105753491 A CN 105753491A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses blast furnace slag cement refractory castable used for a pulverized coal boiler.The blast furnace slag cement refractory castable is prepared from, by weight, a binder, aggregate and powder, 40-50 parts of blast furnace slag cement with the strength grade of 52.5 serves as the binder, and the water-cement ratio is 0.5; the aggregate includes 30-35 parts of fine aggregate with the grain size smaller than 4.5 mm, 30-35 parts of fine aggregate with the grain size being 7-10 mm and 20-25 parts of fine aggregate with the grain size being 16-18 mm; the powder includes 20-25 parts of powder with the grain size being 0.06-0.1 mm and 25-30 parts of powder with the grain size smaller than 0.06 mm.The castable is wide in source, low in cost, convenient to construct and capable of being used in a refractory layer on the low-temperature portion of the pulverized coal boiler and has the advantage of being long in service life.
Description
Technical field
The present invention relates to boiler refractories, especially, relate to a kind of slag cements castable refractory for pulverized-coal fired boiler.
Background technology
Refractory material is the important component part in boiler, for the flame in boiler furnace and each heating surface being hedged off from the outer world, therefore requires have good resistance to elevated temperatures, heat-proof quality and sealing property for refractory material used.Directly affect the efficiency of combustion of boiler the service life of refractory material, use safety and service life.The problem that the universal cost of boiler refractories is high, service life is short with maintenance period of industry at present.Therefore it provides one is capable of withstanding high temperature, service life, the boiler refractories of length was industry good problem to study.
Summary of the invention
Present invention aim at providing a kind of slag cements castable refractory for pulverized-coal fired boiler, the problem that to solve in prior art, boiler refractories cost is high, service life is short with maintenance period.
For achieving the above object, the present invention provides a kind of slag cements castable refractory for pulverized-coal fired boiler, is made up of the component of following parts by weight:
Binding agent: slag cements 40-50 part of label 52.5, the ratio of mud 0.5；
Aggregate: particle diameter is less than fine aggregate 30-35 part of 4.5mm, fine aggregate 30-35 part of particle diameter 7mm-10mm, fine aggregate 20-25 part of particle diameter 16mm-18mm；
Powder: powder 20-25 part of particle diameter 0.06mm-0.1mm, particle diameter powder 25-30 part less than 0.06mm.
Further, described aggregate employing two grades is made with three grades of grogs；Or, useless refractory brick is made.
Further, described powder employing two grades is made with three grades of grogs；Or, useless refractory brick is made.
The method have the advantages that
The raw material sources of this castable are extensive, with low cost, and easy construction can be used for pulverized-coal fired boiler low temperature position flame retardant coating, the advantage with length in service life.
Detailed description of the invention
Hereinafter embodiments of the invention are described in detail.
The preferred embodiments of the present invention provide a kind of slag cements castable refractory for pulverized-coal fired boiler, are made up of the component of following parts by weight:
Binding agent: slag cements 40-50 part of label 52.5, the ratio of mud 0.5；
Aggregate: particle diameter is less than fine aggregate 30-35 part of 4.5mm, fine aggregate 30-35 part of particle diameter 7mm-10mm, fine aggregate 20-25 part of particle diameter 16mm-18mm；
Powder: powder 20-25 part of particle diameter 0.06mm-0.1mm, particle diameter powder 25-30 part less than 0.06mm.
Preferably, described aggregate employing two grades is made with three grades of grogs；Or, useless refractory brick is made.
Preferably, described powder employing two grades is made with three grades of grogs；Or, useless refractory brick is made.
Embodiment 1
Binding agent: the slag cements 50kg of label 52.5；
Aggregate: particle diameter is less than the fine aggregate 30kg of 4.5mm, the fine aggregate 35kg of particle diameter 7mm-10mm, the fine aggregate 25kg of particle diameter 16mm-18mm；
Powder: the powder 20kg of particle diameter 0.06mm-0.1mm, particle diameter are less than the powder 25kg of 0.06mm；
By the ratio of mud 0.5, add water and mix.
Embodiment 2
Binding agent: the slag cements 45kg of label 52.5；
Aggregate: particle diameter is less than the fine aggregate 33kg of 4.5mm, the fine aggregate 32 of particle diameter 7mm-10mm
Kg, the fine aggregate 22kg of particle diameter 16mm-18mm；
Powder: the powder 22kg of particle diameter 0.06mm-0.1mm, particle diameter are less than the powder 22kg of 0.06mm；
By the ratio of mud 0.5, add water and mix.
Embodiment 3
Binding agent: the slag cements 40kg of label 52.5；
Aggregate: particle diameter is less than the fine aggregate 35kg of 4.5mm, the fine aggregate 30kg of particle diameter 7mm-10mm, the fine aggregate 20kg of particle diameter 16mm-18mm；
Powder: the powder 25kg of particle diameter 0.06mm-0.1mm, particle diameter are less than the powder 30kg of 0.06mm；
By the ratio of mud 0.5, add water and mix.
The raw material sources of this castable are extensive, with low cost, and easy construction can be used for pulverized-coal fired boiler low temperature position flame retardant coating, the advantage with length in service life.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention；For a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (3)
1. the slag cements castable refractory for pulverized-coal fired boiler, it is characterised in that be made up of the component of following parts by weight:
Binding agent: slag cements 40-50 part of label 52.5, the ratio of mud 0.5；
Aggregate: particle diameter is less than fine aggregate 30-35 part of 4.5mm, fine aggregate 30-35 part of particle diameter 7mm-10mm, fine aggregate 20-25 part of particle diameter 16mm-18mm；
Powder: powder 20-25 part of particle diameter 0.06mm-0.1mm, particle diameter powder 25-30 part less than 0.06mm.
Slag cements castable refractory for pulverized-coal fired boiler the most according to claim 1, it is characterised in that:
Described aggregate uses two grades and makes with three grades of grogs；Or, useless refractory brick is made.
Slag cements castable refractory for pulverized-coal fired boiler the most according to claim 1, it is characterised in that:
Described powder uses two grades and makes with three grades of grogs；Or, useless refractory brick is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610258866.1A CN105753491A (en) | 2016-04-25 | 2016-04-25 | Blast furnace slag cement refractory castable used for pulverized coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610258866.1A CN105753491A (en) | 2016-04-25 | 2016-04-25 | Blast furnace slag cement refractory castable used for pulverized coal boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105753491A true CN105753491A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610258866.1A Pending CN105753491A (en) | 2016-04-25 | 2016-04-25 | Blast furnace slag cement refractory castable used for pulverized coal boiler |
Country Status (1)
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| CN (1) | CN105753491A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746003A (en) * | 2012-07-02 | 2012-10-24 | 浙江恒丰建材有限公司 | High-strength alkali-resistant refractory castable |
-
2016
- 2016-04-25 CN CN201610258866.1A patent/CN105753491A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746003A (en) * | 2012-07-02 | 2012-10-24 | 浙江恒丰建材有限公司 | High-strength alkali-resistant refractory castable |
Non-Patent Citations (3)
| Title |
|---|
| 中国电力企业联合会标准化中心: "《电力工业标准汇编 火电卷2001》", 30 April 2003, 中国电力出版社 * |
| 时淑颖: "耐火混凝土配合比选择", 《混凝土》 * |
| 范长河: "《粉煤冶金电炉及设计》", 31 January 2013, 冶金工业出版社 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160713 |
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| RJ01 | Rejection of invention patent application after publication |