How is the castable development prospect?

For some want to do industry castable but very hesitant people, who are considering how is industry castable prospects, technical staff of Xinmi Changxin today to give you an answer.

In fact, choose industry castable shows that you are still very eyes, because the development prospect of the castable is very broad, whether can use castable in what place, so it can be said is the choice of castable is not wrong; there is the prospect of castable is good but also because of their condition outstanding, first of all the first is the castable high-temperature considerable, so whatever is great in the iron and steel factory or in the furnace of the demand, and the use of many places, development benefit will be relatively good many; and then pouring material and long service life, unlike the ordinary refractorymaterial, we did not take long for the index has declined step by step, to bring certain influence to our production and work efficiency, problems like this we can choose castable. But like the petrochemical industry are large enterprises to use castable, the future development has brought great benefits, so in general the development prospects of castables or very good.

The content of the development prospects of castable refractory maybe you have some understanding of it, if you want to ask more about castable knowledge can consult us freely.

Experts explain – clay firebrick compliance requirements

The experts tell you fireclay brick compliance requirements. Acceptance of fireclay bricks masonry of refractory brick works, to carefully check the flue, furnace, special attention should be paid to the vault, is the single arch, the bottom of the equipment. The next writer will give you detailed introduce:

1, in the masonry firebrick, refractory material used and the mud, according to the level and composition of label, shall be in accordance with specifications and drawings;

2, to ensure the quality of masonry of refractory clay brick is good, also is to follow the wrong sewing, levelness and verticality, mortar joint thickness and standard, size and drawings in accordance with;

3, in the process of acceptance of the furnace body, assign out for shop assistant director must personally from top to bottom, according to each part of the furnace body check, are several mortar joint thickness inspection, furnace body parts when measured by acceptance necessary enrollment size, careful examination of many important structure of the furnace body the building.

The above is writer introduce you acceptance fire brick requirements, for reference purposes only, hope to help you, if you have what doubt, please feel free to contact us!

Notes on using anhydrous stemming

The anhydrous stemming mainly used in tadpole, but out of the mouth of the clay gun susceptible to iron slag erosion and chemical erosion, caused by the slag iron out not only, but also prone to iron mouth fracture, leading to iron out the tadpole accident. So we in the use of anhydrous stemming must pay attention to:

1, pay attention to insulation. The general insulation at 20-60 degrees Celsius advisable, winter use the gun mud roasted in the fire soft use beside the gun can be used, after baking gun measures 2, do not mix with water use, not to install mud gun water, performance or lost anhydrous stemming.

3, to change the mud to bore in the clean water stemming, clay loading quantity according to the requirements of the iron mouth, usually with water stemming amount of 1/5 or 1/4, that is 80-120 kg.

4, open iron, iron mouth eye size should be appropriate, to ensure that the tapping time, generally for diameter should be 60-80 mm.

5, plugging tadpole, don’t immediately returned gun, 10-20 minutes back gun, in order to prevent iron mouth blown open.

6, the use of water stemming, manufacturers can also be treated according to its own characteristics, in order to maintain taphole, ensure safety in production.

Anhydrous stemming and its main characteristics

Anhydrous stemming is to continuously improve the production of pig iron (especially after burning), with the traditional water stemming tadpole maintenance is not good situation, after repeated testing and improvement, a new type of refractory material is developed, which adapts some advanced refractory materials and chemical raw materials, with advanced and a unique process preparation, its advanced technology, excellent quality, less consumption, there is a water gun mud can not be comparable, the blast furnace iron mouth maintenance, flow stability, promote the safe production, plays a role is the key to reduce the accident potential.

The main characteristics of anhydrous stemming:

Compared with the traditional water gun mud, has the following advantages using anhydrous stemming:

1, less dosage, high strength. Anhydrous stemming each time only needs to install the 80-120kg, as the water gun mud made of new refractory materials, especially high strength, with clay content can be less ensuring tadpole depth; high temperature resistance, anti slag erosion, non stick iron slag, iron mouth without baking, is another characteristic of anhydrous stemming, from the tadpole maintenance is very convenient.

2, flow stability, an accident is not easy. The anhydrous stemming high strength, using drilling drilled iron mouth aperture always remains the same size; ensure the hot metal flow uniformity, reduce or avoid running large flow, diffuse iron slag, explosion accident occurred. At the same time, can greatly reduce the labor intensity of workers.

3, ensure net iron slag, promoting the furnace, using anhydrous stemming generally, aperture iron mouth than the use of water stemming from aperture small, under the same pressure, anhydrous stemming, can fully guarantee the blast furnace slag and iron out net, the hearth, active space, and promote the furnace operation, and is conducive to strengthening smelting, improve the management of the production of pig iron.

Low cement castable drying method

To prevent low cement castable burst, in addition to what we know to add anti-burst agents,castable permeability increase, there is an effective and more important measure is a reasonable use of heating and drying systems, control and reduce the drying process castable maximum vapor pressure value inside. When a material selected construction is completed, the only reasonable means to resolve the burst of dry heat, dry heat system is unreasonable if, even castable high permeability also cause burst. Different curing temperatures, different drying systems, in castable inside will produce different vapor pressure when the maximum vapor pressure exceeds the strength of the material up on the anti-burst occurred. Low cement castable is prone to burst, be especially careful when dry.

Different curing temperatures low cement castable, temperature and vapor pressure generated during heating are also different. In winter construction, due to lower curing temperatures during drying may have a greater vapor pressure, heating and drying should be careful.

Heating system to a certain surface heating refractory castable, castable construction body steam pressure due to different heating systems and there are significant differences.Conventional dry heating system of the stage, before drying, heating only half of the drying occurs near the surface, while in the second half of the rapid drying temperature, the internal construction of a sharp increase in the vapor pressure of the body. Pose a safety rate drying system (castable tensile strength and maximum steam pressure ratio) declined.

Ideal system should be safe drying temperature is high, the drying efficiency is high, uniform release of vapor pressure in the drying process, and the vapor pressure is not excessive. When using the continuous heating system must be adapted to the conditions specified for each material. The application of a uniform material drying system to ignore the similarities and differences, it is likely to induce burst, must pay full attention. Also, consider the impact of the construction body shape, thickness, and the contact surface, etc.

Insulating refractory castable

Insulating refractory castable  is really not less than 45% porosity castable, divided into lightweight refractory castable, foam refractory castable and filling refractory castable.

Insulation castable refractory aggregate is divided into: coarse aggregate, particle size of 10mm~3mm, loose bulk density is less than 1.0g/cm3; fine aggregate, particle size of less than 3mm, the loose bulk density is less than 1.2g/cm3. Lightweight aggregates are expanded perlite, ceramic, porous clinker, cenosphere, pumice, vermiculite, alumina hollow ball. Foam refractory castable is composed of refractory lightweight aggregate, binder and foam etc… Foam with rosin soap with most. Air entraining castable is using some metal powder and acid to produce hydrogen, or dolomite, periclase and plaster (as a stabilizing agent) to produce gas and sulfuric acid reaction, or by the calcium carbide acetylene reaction occurs to produce water gas, so that the cast into porous light body.

Ceramic fiber Products

Products introduction：

Ceramic fiber is filtered vacuum pressure forming, using blowing fiber (fiber is short, thin, easily broken mix) as ceramic fiber materials, adding a certain percentage of the inorganic binder material. After beater dispersed into slurry. Then pumped into the molding pool, and stirred with compressed air, into the mold forming pools, using the principle of vacuum pumping, and mold pressure, molding and stripping, stripping thick ceramic fiber, due tothe presence of water, to be placed tray drying oven dried 10-24 hours away. After drying fiberboard through dedicated grinding machines, trimming machines, precise control of dimension.

Ceramic fiber Features：

1, hard and excellent strength, anti-erosion, easy processes cutting.

2, light weight, good insulation effect, is a versatile product that can be applied to the lining of flame and heat resistant surface air temperature direct impact.

3, product variety, depending on temperature (800 ℃ -1800 ℃), corrosion resistance, easy processing cutting, direct contact with the flame, easy to install.

4, the product has good resistance to thermal shock performance, versatile features.