Refractory casting material

A technology of refractory castables and aggregates, applied in the field of refractory materials, can solve problems such as erosion reaction and refractory material damage, and achieve the effects of reducing porosity, improving corrosion resistance, and high strength

Inactive Publication Date: 2003-10-22
宜兴天霸非金属材料有限公司
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Al 2 o 3 ·SiO2 2 series refractories because the melt contains a large amount of Na + 、K + , Fe 2+ , Ca 2+ Such as metal ions, a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, refractory castable, component ratio is: (weight percent %)

[0015] First grade bauxite

[0016] 5-3mm 26 parts

[0017] 3-1mm 23 parts

[0018] 1-0mm 19 parts

[0019] <0.088mm 18 parts

[0020] <0.088mm active magnesium oxide 3 parts

[0021] <0.088mm sintered grade magnesia 5 parts

[0022] Silica powder 6 parts plus:

[0023] Sodium tripolyphosphate 0.2 parts Among them, activated magnesium oxide is lightly burned MgO after magnesite was calcined at 800°C-850°C.

Embodiment 2

[0024] Embodiment 2, refractory castable, component ratio is: (% by weight)

[0025] First grade bauxite

[0026] 5-3mm 25 parts

[0027] 3-1mm 22 parts

[0028] 1-0mm 18 parts

[0029] <0.088mm 20 parts

[0030] <0.088mm active magnesium oxide 3 parts

[0031] <0.088mm sintered primary magnesia 6 parts

[0032] Silica powder 6 parts plus:

[0033] Sodium tripolyphosphate 0.25 parts Among them, active magnesium oxide is lightly burned MgO after magnesite was calcined at 800°C-850°C.

Embodiment 3

[0034] Embodiment 3, refractory castable, component ratio is: (weight percent %)

[0035] First grade bauxite

[0036] 5-3mm 26 parts

[0037] 3-1mm 24 parts

[0038] 1-0mm 20 parts

[0039] <0.088mm 17 parts

[0040] <0.088mm active magnesium oxide 2 parts

[0041] <0.088mm sintered primary magnesia 6 parts

[0042] Silica powder 5 parts plus:

[0043] Sodium tripolyphosphate 0.3 parts Among them, activated magnesium oxide is lightly burned MgO after magnesite was calcined at 800°C-850°C.

[0044] The performance parameters of the refractory castable made of the above proportioning combination are as follows:

[0045] Bulk density: 2.6-2.7g / cm 3

[0046] Compressive strength (1350℃×3h): ≥70Mpa

[0047] Line change after burning: (1450℃×3h): 0--+0.3%

[0048] Refractoriness: ≥1790℃

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Bulk densityaaaaaaaaaa
Compressive strengthaaaaaaaaaa
Refractorinessaaaaaaaaaa
Login to view more

Abstract

The present invention relates to a fire-resistant pouring material, its composition includes 65-70% of first-grade alumina aggregate whose grain size is less than 5 mm, 16-20% of first-grade alumina powder material whose grain size is less than 0.088 mm, 2-3% of active magnesium oxide whose grain size is less than 0.088 mm, 5-6% of sintered first-grade magnesite clinkes whose grain size is less than 0.088 mm, 5-6% of silicon dioxide micropowder, besides, 0.15-0.3% of sodium polyphosphate salt is added. Said invention utilizes the addition of active magnesium oxide in Al2O3.SiO2 series refractory material and has no cement dispersing agent so as to make the formed pouring material have high strength, good antioxidation property, good resistance of corrosion of molten refuse and good thermal stability.

Description

technical field [0001] The invention relates to a refractory material, in particular to an erosion-resistant and oxidation-resistant refractory castable suitable for garbage incinerators. technical background [0002] The waste melting furnace uses 1300℃-1600℃ to melt garbage ash. The furnace is a high-temperature zone, and the burner method of using heavy oil and other petrochemical fuels makes the furnace present a strong oxidizing atmosphere. Al 2 o 3 ·SiO2 2 series refractories because the melt contains a large amount of Na + 、K + , Fe 2+ , Ca 2+ Such as metal ions, at this high temperature, it is very easy to have an erosion reaction with the refractory material, and produce low-melting material to damage the refractory material. Contents of the invention [0003] The present invention just in order to overcome above-mentioned deficiency, provides a kind of in Al 2 o 3 ·SiO2 2 It is an improved corrosion-resistant and anti-oxidation refractory castable based...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B35/18C04B35/66
Inventor 吴国强钱军峰
Owner 宜兴天霸非金属材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap