Jun 30, 2021
Silicon Carbide Castable

Silicon carbide refractoy ramming have good properties of good chemical stability & high temperature resistance & good wear resistance & anti-scouring, anti-erosion performance is good, and high thermal conductivity. There are for sale cheap ramming mass in RongSheng fire bricks company can provide Sic refractory ramming mass specification and category as well as competitive price & high grade quality SIC crubide refractory products, other specification according to customer requirements, welcome to contact us or email us for free quote or price list.

Silicon Carbide Crucible Definition

Silicon carbide ramming mass is an amorphous refractory material made of silicon carbide, graphite and anthracite as main raw materials, adding additives such as ultrafine powder, and fused cement or resin as a binder.

Silicon Carbide Crucible Characteristics

1.Silicon carbide crucible have high thermal conductivity.
2.Refractory silicon carbide ramming mass have good chemical stability.
3.Silicon carbide refractory crucible have high temperature resistance, good wear resistance.
4.Refractory silicon carbide crusible have anti-scouring, anti-erosion performance is good.

Silicon Carbide Crucible Specification

Item Condition Unit Index
Sic(%) % 85
Bulk Density(g/cm3) 110℃*24h g/cm3 2.60
Cold  Crushing Strength (Mpa) 110℃*24h Mpa 80
1400℃*3h Mpa 100
Flexural Strength(Mpa) 110℃*24h Mpa 10
1400℃*3h Mpa 14
Wear Resistance cc 6
Thermal Conductivity

400℃(w/m.k)

350℃ W/m.k 10

Silicon Carbide Crucible Application

1.Silicon carbide refractoy ramming mass can be used to fill blast furnace shaft cooling equipment and masonry gap or masonry screed for use as filler or joint filler.
2.Silicon carbide refractoy crucible can also be used as a furnace for smelting steel, iron making, electric power.
3.SIC refractoy ramming mass mainly used in submerged arc furnaces, industrial kilns, cyclone cylinders and waste incinerators.
4.Refractory silicon carbide ramming mass mainly used in industrial furnaces such as the inner wall of the cyclone and waste incinerators.
5.Silicon carbide ramming mass is used to fill the cooling equipment between the furnace body and the masonry gap or the steel refractory brick of the throat and the filling material for the screed layer of the masonry

Silicon Carbide Crucible Advantage

1.Refractory silicon carbide ramming mass have high strength, good resistance to solid particles and liquid slag. Because of the high hardness and good corrosion resistance of the refractory ramming , refractory ramming mass can reduce the erosion of the alkali lining on the lining; The thin liquid slag can be hanged on the lining to form a slag film to protect the lining. The refractory ramming mass has small thermal expansion coefficient and good thermal shock resistance, silicon carbide crucible have high SiC content in the refractory material and good heat conduction.
2.Silicon carbide ramming mass refractory is also resistant to high temperature (melting point above 2200 °C), corrosion resistance, high strength and wear resistance, low thermal expansion coefficient, good thermal shock resistance, high thermal conductivity, high melting point of carbon up to 3500 ° C, high thermal conductivity, resistance to rapid cooling and rapid heat, and The slag has a large saturation angle and is difficult to erode. Refractroy ramming mass has no eutectic relationship with AL2O3, SiO2, SiC. What’s more, refractory silicon carbide crubide has low expansion ratio.

Silicon Carbide Crucible Selection

1.The compressive strength of the silicon carbide crucible is less than that of the silicon carbide castable, but the porosity is larger than that of the silicon carbide castable.
2.Silicon carbide refractory ramming mass is generally used to repair the lining of the kiln, and some irregular kiln parts. Because the mold cannot be laid, the silicon carbide ramming mass is usually used for construction.
3.The lining with the high temp furnace is generally made of silicon carbide castable or silicon carbide refractory brick. In the process of use, sometimes the lining will be damaged during the blanking, which will cause the lining to peel off and damage. Generally, the silicon carbide ramming mass will be used to repair the lining.
4.Because the silicon carbide refractory crucible is beaten during construction, refactory mass will cause a large porosity. This will help the water vapor in the material to be discharged and avoid the phenomenon of explosion. At the same time, the silicon carbide refractory ramming mass is used to repair the lining.The customer can choose the normal temperature repair in case of shutdown, or they can use hot repair, that is, non-stop furnace maintenance.

Silicon Carbide Crucible Conservation

During the construction with the silicon carbide refractory crucible period, the vibration of the constructed body should be avoided as much as possible. After the treatment of the working surface of the lining is completed, the natural curing is carried out. The curing temperature is 15~35°C. In the dry environment (the relative humidity of the air is not more than 70%), the natural curing period is 5-7 days. The oven can then be dried in accordance with the oven profile.

Silicon Carbide Crucible Supplier in Rongsheng Refractoy Castable Factory

1.Rongsheng refractory castable factory have rich refractory raw materials and 20 years experienced in the refractory bricks manufacturing. Rongsheng refractory castable can provide specification and category as well as competitive price & high-grade quality refractory castable and refractory ramming mass products.
2.RongSheng refractory firebricks manufacturer have the professional sales team,if you have any smaller problem, Rongsheng refractory bricks factory can solve them at any time. We treat every client as a friend ,friend is precious.
3.Rongsheng Refractory is constantly committed to quality management, process management and cost management, strives for internal strength, adheres to the development of science and technology, wins by quality and reputation, provides technical guidance services to provide customers with quality products and services.

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Jun 29, 2021
Fire Clay Refractory Castable

Its construction is simple, is the best construction product for the high temperature alkali resistant parts. Good workability, strong cohesion, initial setting time and construction can be a long time, fast strength growth, strong impermeability, no acidification, easy to ensure that the masonry plaster full and dense, can significantly improve the chimney liner air tightness, integrity and anti-corrosion ability. It is an ideal cementing material for high chimneys, high temperature flue and duct lining. It can also be used in acid tank and other acid resistant parts in petroleum, chemical, nonferrous metallurgy and so on.

Application of Clay Insulation Castable

Metallurgical industry
Petroleum, chemical industry, building materials, electric power
Engineering industry furnace and thermal equipment

Detailed Fire Clay Insulation Castable Description

Item Unit L-45 L-50 L-60 L-65 L-75 L-80 L-85 L-90
Al2O3 % 45 50 60 65 75 80 85 95
Fe2O3 % 2 2.5 2.5 2.3 2.5 2.0 1.8 1.2
Bulk Density(dried at 110℃) g/cm3 2.2 2.2 2.3 2.35 2.5 2.6 2.7 3.0
Service Temp 1400 1450 1500 1550 1600 1650 1700 1750
Cold Crushing Strength 110℃ Mpa 45 47 50 50 65 70 90 95
1100℃ Mpa 40 42 45 45 55 60 80 85
1500℃ Mpa 65 68 80 85 100 110
Modulus of Rupture 110℃ Mpa 7 7 8 8 10 11 12 13
1100℃ Mpa 6 6 7 7 9 9 10 12
1500℃ Mpa 9 9 11 12 13 15
Max Grain Size mm 6 6 6 6 6 6 6 6
Water(Typical) % 11-13 11-13 9-11 9-11 9-11 7-9 6-8 6-7
Application Guidelines P-preferred, R-Rodding,V-Vibration, T-Tamping
Mixer p P P P P P P P p
Placement R/V/T R/V/T R/V/T R/V/T R/V/T R/V/T R/V/T R/V/T R/V/T
Water/Mixer Temp 20±5 20±5 20±5 20±5 20±5 20±5 20±5 20±5 20±5
Mixing 2/5 2/5 2/5 2/5 2/5 2/5 2/5 2/5 2/5
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Jun 29, 2021
High Alumina Castable

High Alumina Refractory Castable Definition

High alumina refractory castable is used as an aggregate and a powder, a refractory castable made of a binder is added. High alumina refractory castable has high mechanical strength and good resistance to thermal shock and abrasion. High alumina refractory castable is mainly used as the lining of various kiln such as boiler, blast furnace hot blast stove, heating furnace and ceramic kiln. Soaking furnace, heat treatment furnace, rotary kiln; various high temperature burner lining, heating furnace water pipe lining, molten steel furnace refining device parts and high temperature wear resistant body of petrochemical catalytic cracking reactor; blast furnace tapping groove, iron The furnace iron tapping tank and the integral spray gun for hot metal pretreatment are lined up. Large prefabricated blocks and linings can be made.

High Alumina Refractory Castable Features

1. High alumina refractory castable have compact bulk density, low porosity, strong resistance to slag or solution penetration
2. High alumina refractory castable resistant to rapid cooling, heat shock resistance and thermal shock resistance.
3. High alumina refractory castable have high compressive strength, good wear resistance.
High alumina refractory castable have easy to construct,high alumina refractory castable can be cast into a whole lining, high alumina refractory castable can be customized into prefabricated masonry.
4. High alumina refractory castable have chemical resistance.

High Alumina Refractory Specification

Item High Alumina Refractory Castable RS-1 RS-2 RS-3
Al2o3 %   60 65 70
Bulk Density g/cm3 110℃*24h 2.40 2.60 2.80
Cold Crushing Strength Mpa 110℃*24h 55 60 65
1000℃*3h 80 90 100
Modules of Rupture Mpa 110℃*24h 7 8 9
1000℃*3h 9 11 13
Linear Change after firing % 1000℃*3h +_0.3 +_0.3 +_0.3
Room temperature wear Cm3 1000℃*3h 9 8 7
Thermal shock resistance Times 1000℃ 20 20 20
Max Service temperature 1400 1450 1500

High Alumina Refractory Application

1. High alumina refractory castable can be used as lining for various heat treatment furnace linings and burners, blast furnace hot blast stoves, heating furnaces, electric furnace tapping tanks, lime shaft kiln high temperature section, rotary kiln kiln head, power plant boilers and other industrial furnaces.
2. High alumina refractory castable is mainly used as the lining of various kiln such as boiler, blast furnace hot blast stove, heating furnace and ceramic kiln. Soaking furnace, heat treatment furnace, rotary kiln; various high temperature burner lining, heating furnace water pipe lining, molten steel furnace refining device parts and high temperature wear resistant body of petrochemical catalytic cracking reactor; blast furnace tapping groove, iron The furnace iron tapping tank and the integral spray gun for hot metal pretreatment are lined up. Large prefabricated blocks and linings can be made.

High Aluminum Refractory Castable Production Process

1. According to the formula, the raw materials of high alumina castables are produced.
2. Calculate the amount of aggregate, powder gradation, binder and additive according to the raw material formula, and strictly control the aggregate powder particles.
3. Put the weighed aggregate and powder into the mixer and stir them evenly, then pour the powder into the aggregate and stir for 8-10 minutes.
4. The high aluminum refractory castables that have been stirred are placed in a ton of bags, equipped with additives and binders, and then packaged.
5. The packaged high aluminum castables are stored in the warehouse, the date identification and moisture-proof waterproof treatment are done.

High Aluminum Refractory Castable Use Precautions

1. When making high alumina refractory castable mud, fully stir the dry material and add water. Strictly control the amount of water used to avoid affecting the effect after pouring.
2. When making high alumina mud, it needs to be stirred by a mixer, and manual mixing is prohibited.
3. According to the required amount of production, the production of castables need to be used within 30 minutes, if there is condensation, can not be used.
4. When constructing, pay attention to avoid the anchor parts.
5. According to the design to determine the thickness of the refractory high alumina castable , can not be cast freely.
6. After pouring and baking, pay attention to the heating rate and time, and not heat up too quickly.
7. After demoulding, check the refractory high alumina castable body. If there is a construction problem, rework according to the situation to ensure the practicability of the casting body.

High Aluminum Refractory Castable Supplier in RS Factory

Rongsheng refractory castables manufacturers can deliver the finished castables to the designated location of the user. The user can construct according to the construction instructions provided by the manufacturer. It can be put into production by adding water or other liquid mixing, vibration forming, curing and baking. There is no restriction on the construction site, and it can be cast into any shape.

Why Choose RS Factory as High Aluminum Refractory Castable Supplier

Rongsheng refractory manufacturer has 20 years of quality assurance, bringing maximum benefits to customers.
Rongsheng refractory castables manufacturer has four advantages
1.Rongsheng refractory bricks manufacture have strong production capacity, supply is guaranteed
2.Rongsheng refractory bricks company has professional refractory brick production plants and amorphous refractory production plants.
3.Rongsheng refractory bricks manufacture Have advanced concepts and scientific management. Rongsheng Refractory is constantly committed to quality management, process management and cost management, strives for internal strength, adheres to the development of science and technology, wins by quality and reputation, provides technical guidance services to provide customers with quality products and services.
4.Rongsheng refractory bricks manufacture have perfect after-sales service system
From raw material procurement to final product inspection and after-sales service. Ensure that the product offered to the user is 100% qualified.

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Jun 29, 2021
Silica Refractory Castable

The crystalline phase types of SiO2 has great influence on the property of silica castable, reasonable ratio of tridymite and quartz is key point for the production of silica castable. During the production of silica castable, quartz can’t directly transform into tridymite, to get large as much tridymite as possible, appropriate mineralizer should be added into silica raw material to contribute to quartz transforming into tridymite and crystobalite, besides, it should not significantly decrease high temperature performances of silica castable.

The formulation of silica castable

The raw materials of silica castable are: 65%~75% of quartz aggregate, 20%~28% quartz powder, 2%~8% silica micro powder, 1%~3% calcium aluminate cement, and little amount of additives(sodium tripolyphosphate, sodium hexametaphosphate, organic fibers).
Silica micro powder is high efficient binders of refractory castable, it ensures certain mechanical strength during low temperature roasting, and it won’t decrease hot mechanical strength of silica castable during high temperature using. CaO in calcium is also a kind of mineralizer, which can contribute to quartz transforms into tridymite at high temperature. What’s more, silica powder can also reduce porosity of silica castable and increase its density.

Silica castable physiochemical indexes

Item GZJ-1 2 3 4
SiO2 % 94~95 95.83 93.3 95.2
Al2O3 % / 0.70 1.0 0.8
Fe2O3 % 1.2 1.13 0.9 0.8
CaO % / 2.16 2.8 2.7
Refractoriness ℃ 1710 1730 1730 1730
Bulk density g/cm3 >1.9 1.91 1.95 1.89
True density g/cm3 2.35 2.32 2.35 /
Apparent porosity % <20 <20 <20 <20
Crushing strength MPa 50~80 80 56 51
Linear expansion rate %(1000℃) / 1.18 / /
Thermal conductivity W(m·K) 2.21 2.13 2.21 /
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Jun 29, 2021
Alkali Proof Castable

Alkali proof castable will react with alkali metal oxidizes at high temperature and produce high viscosity liquid phase, which will form a layer of enamel-like protection layer to resist the further permeation and corrosion of molten alkali metals. Lightweight alkali proof castable is made from alkali resistant ceramsite, porous fireclay clinker, waste ceramics, high strength expansile perlite and so on. Calcium aluminate cement or water glass is often used as binder of lightweight alkali proof castable.

Dense alkali proof castable is made from bauxite and fireclay clinker aggregate, binders and powder materials are the same as lightweight alkali proof castable. Chemical compositions of dense alkali proof castable are: 35%~60% of Al2O3 and 35%~60% of SiO2. Calcium silicate cement and silica micro powder are often used as binders of low cement alkali proof castable. Silica micro powder can not only increase medium temperature binding strength, but contributes to the formation of anti-permeation layer.

Alkali proof Castable Physiochemical Index

Item Light alkali resistant castable Heavy alkali resistant castable
Al2O3 % 35~65 45~65
SiO2 % 35~45 23~35
Bulk density g/cm3(1100℃, 3h) 1.4~1.5 2.1~2.3
Crushing strength Mpa (1100℃, 3h) 6~6.5 6~10
Linear change rate % (1100℃, 3h) -(0.3~0.5) -(0.3~4)
Thermal shock resistance(1100℃, water cooling) 20
Thermal conductivity/ W·(m·K-1) 0.4~0.5 1.2~1.3

Alkali Proof Castable Applications

Alkali resistant castable is mainly used at places where surfers severe alkali metal oxides corrosion and alkali metal vapor corrosion. The main applications of dense alkali proof castable are: rotary cement kiln end, kiln hood, pre-heater, discharge hole, blast tuyere and other parts, besides it is also widely used in rotary alumina roasting kilns.
The main applications of lightweight alkali proof castable are: pre-heater top cover, cylinder body and insulating lining of rotary alumina kilns and rotary cement kilns.

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Jun 29, 2021
Acid Resistant Castable

Good workability, excellent cohesiveness, fast initial growth time and long operation time, strong impermeability, no need for acidification, easy to ensure the dense and fullness of masonry gray joints, can significantly improve the chimney lining wall air tightness, integrity and corrosion resistance of the lining. Which is customized into prefabricated masonry. There are for sale cheap light weight insulating acid resistant castable in RS fire bricks company can provide castable acid resistant specification and category as well as competitive price & high-grade quality refractory castable products,other specification according to customer requir ements,welcome to contact us or email us for free quote or price list.

Light Acid Resistant Castable Definition

Light acid resistant castable a granular and powdered material made from a refractory material with a certain amount of binder. Refractory lightweight acid resistant castable has high fluidity and is suitable for unshaped refractory materials which are formed by casting.Compared with other amorphous refractory materials, the binder and moisture content are higher, and the fluidity is better. Therefore, the refractory material has a wide application range, and the materials and binders can be selected according to the use conditions.Refractory lightweight acid resistant castable can be directly cast into a liner or used as a precast block by casting or compacting.

Light Acid Resistant Castable Features

Lightweight refractory acid resistant castable have heat stability.
Lightweight refractory acid resistant castable have light weight.
Lightweight refractory acid resistant castable have heat preservation.
Lightweight refractory acid resistant castable have easy construction.
Lightweight refractory acid resistant castable have low water absorption.
Lightweight refractory acid resistant castable have temperature resistance.
Lightweight refractory acid resistant castable have acid corrosion resistance.
Lightweight refractory acid resistant castable have high compressive strength.
Lightweight refractory acid resistant castable have acid and acid gas corrosion.

Light Acid Resistant Castable Specification

Item   RS-1 RS-2
Bulk Density g/cm3 0.8+-0.2 1.2+-0.2
Cold Crushing Strength 110℃*24h 7.5 10
400℃*4h 7.5 10
Cold modules of rupture Mpa 1 1
Acid resistance

(40%sulfuric acid soak,

48hcompressive strength)

Mpa 7.5 10
Long-term use temperature 600
Initial condensation 45
Final condensation 10

Light Acid Resistant Castable Application

1.Lightweight refractory acid resistant castable suitable for alkali corrosion resistant parts at high temperatures.
2. Lightweight refractory acid resistant castable suitable for high chimneys, high temperature flue and duct lining.
3. Lightweight refractory acid resistant castable used in the acid resistant engineering for acid resistant tanks and tanks in petroleum, chemical, non-ferrous metallurgical and other industries.

Light Acid Resistant Castable Advantage

1.Light acid resistant castables can be arbitrarily shaped and easy to construct, which can meet the needs of different groups of people.
2.The acid-resistant castable production process is relatively simple and does not require special equipment.
3.Lightweight acid refractory castable have high degree of mechanization, simplest construction, high material utilization rate, and generally high normal temperature strength,refractory acid resistant castable can be made into prefabricated parts installed at the kiln spinning site.
4.Light acid resistant castables have good easiness, excellent cohesiveness, fast initial growth time and long operation time, strong strength, strong impermeability, no need for acid treatment, easy to ensure the dense and fullness of masonry gray joints, can significantly improve The airtightness, integrity of the lining wall of the chimney and the corrosion resistance of the lining.

Light Acid Resistant Castable Supplier in Rongsheng Firebricks Factory

Rongsheng refractory manufacturer has 20 years of quality assurance, bringing maximum benefits to customers.

Rongsheng refractory castables manufacturer has four advantages

1.Rongsheng refractory bricks manufacturer have strong production capacity, supply is guaranteed.
2.Rongsheng refractory bricks company has professional refractory brick production plants and amorphous refractory production plants.
3.Rongsheng refractory bricks manufacture Have advanced concepts and scientific management. Rongsheng Refractory is constantly committed to quality management, process management and cost management, strives for internal strength, adheres to the development of science and technology, wins by quality and reputation, provides technical guidance services to provide customers with quality products and services.
4.Rongsheng refractory bricks manufacture have perfect after-sales service system From raw material procurement to final product inspection and after-sales service. Ensure that the product offered to the user is 100% qualified. If you worry about the RongSheng refractory castable factory ,which is not satisfy with your high requirement and remove you doubts, welcome to visit our factory & company,the technologists & designers waiting for you.

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