-
Special ceramic valve
As a professional supplier of ceramic ball valves in the world, KSINO is not only committed to the production of various ceramic valves, but also has been committed to the research and development of new ceramic materials. Y-TZP and Ce-TZP are widely used because of their high strength, good wear resistance, good chemical stability and other characteristics. However, due to their thermal shock resistance, they cannot be used under high temperature conditions. As the ball core of valve, its toughness is limited, which may lead to broken ball in case of jamming or locking. In order to meet the increasingly complex and harsh service conditions of ceramic valves, especially the higher service temperature, we have developed a magnesium oxide partially stabilized zirconia ceramic (Mg-PSZ) with excellent thermal shock resistance, and after continuous research and experiment, continuous innovation, we have developed a composite ceramic material with excellent thermal shock resistance and toughness comparable to metal.
The composite ceramic material developed by our company is made of metal and ceramic powder mixed and sintered. The metal elements can be Ti, Cr, Ni, Co, etc., which can be used alone or in combination, or other alloy powders. The selected metal elements have no chemical reaction with ceramic powder, the thermal expansion coefficient is close, and the wetting ability between metal and ceramic particles is good. Ceramic elements provide the ability to bear loads and wear resistance, while metal elements endow them with impact resistance toughness. Therefore, the composite ceramic material has a series of excellent properties, such as high strength and hardness, good toughness, good wear resistance, small coefficient of thermal expansion, high modulus of elasticity, good thermal shock resistance and good chemical stability, which can not be obtained by using only metal or ceramics. Although its corrosion resistance is reduced due to the addition of metal elements, its toughness and thermal shock resistance are significantly improved, which can not only meet the requirements for use under high temperature conditions, but also avoid broken balls due to jamming or locking.
Mixed sintering of metal and ceramic powder
Wedge gate valve
Wear resistant adjustable pulverized coal valve
Gate valve
Globe valve
Slag discharge check valve
Wear resistant expansion device
Three-way reversing valve with form of cast stone wear-resistant ball
Manual and electric wear and corrosion resistant ball valve
Plate gate valve
Wear resistant slag discharge gate valve
Electric wear-resistant pulverized coal gate valve
Wear resistant and anti scaling gate valve
Throttle valve
Combined stop throttle valve
Wear resistant throttle valve
Dry ash gate valve -
Silicon carbide nozzle assembly – silicon carbide concentrator/wear plate/pipe fitting/gear ring/stop/tee in power plants
The main function of the silicon carbide nozzle of the burner is to inject the pulverized coal air mixture (primary air) supplied by the pulverized coal preparation system and the secondary air required for combustion into the furnace at a certain concentration and speed, respectively, so as to achieve stable ignition and combustion in the suspended state.
- 1. The structure of silicon carbide nozzle must be simple, not easy to block, easy to repair and replace, long service life, and improve economic efficiency.
- 2. The silicon carbide nozzle adopts an integrated casting molding process, which is high temperature resistant, wear-resistant and reduces maintenance costs.
The burner nozzles of power plant generally adopts cast steel structure. The proper swing of the burner nozzle can change the position of the flame center to adjust the reheat steam temperature level; The thick and thin pulverized coal burner can prevent furnace coking and high-temperature corrosion, and has the characteristics of stable ignition, good combustion stability at low load, and low NOx emission. After the primary air cast steel nozzle of the burner is burnt and deformed, the deviation between the furnace flame center and the design value is large, and the deviation between the nozzle size and the original size is large. The initial momentum of the jet is reduced compared with that before the burning loss, the range is shorter, and the rigidity is poor. The pulverized coal ignites near the nozzle, and the temperature near the nozzle is high, which is easy to produce slagging. The primary air nozzle of the burner needs to be replaced after it is burnt. During the replacement, the powder pipes connected to the outside of the burner need to be disconnected, the primary air nozzle of the burner and the nozzle should be pulled out together, then replaced, and then loaded. The workload is large, the environment is poor, and it costs labor, time, and money, resulting in great economic losses.
The silicon carbide nozzle of the burner produced by our company is wear-resistant, high-temperature resistant, non-deformable, and its service life is 3-5 times that of the cast steel nozzle, which improves the boiler efficiency, reduces NOX emissions, saves energy and environmental protection, reduces maintenance costs, and improves economic benefits.
It adopts integrated molding process, which is resistant to high temperature, abrasion and deformation.
The defects of cast steel nozzle mainly include the following aspects.
1. The nozzle of cast steel is not wear-resistant, corrosion resistant, high temperature resistant and has short service life. The boiler needs to be shut down for replacement, resulting in great economic losses.
2. The cast steel nozzle is easy to be damaged during the operation of the unit, and the blunt body of the nozzle often falls off, threatening the operation of the burner and the safe operation of the slag extractor.
3. Because the nozzle material is G40Cr20Ni5, which works under high temperature for a long time, when the combustion of pulverized coal is unstable, it will cause uneven temperature distribution in the furnace or coking at the nozzle, resulting in thermal stress at the nozzle due to temperature difference, resulting in serious local deformation of the nozzle, short range of primary air, poor rigidity, pulverized coal ignition near the nozzle, high temperature near the nozzle, and local additional stress in the component. When the temperature fluctuation is large, The thermal stress changes greatly, causing thermal fatigue cracks on the nozzle surface, which will cause the burner nozzle and nozzle to burn over a long period of time.
4. Because the primary air flow is a high-speed gas-solid two-phase flow, the uneven scouring of pulverized coal particles leads to serious local wear of the blunt body and even wear off the blunt body. The nozzle and the blunt body are integrated. On the other hand, the thermal stress at high temperature is easy to cause serious deformation of the nozzle, even burning out, so the nozzle can not play its due role.
-
Alumina, NSiC, ZTA Ceramic lined pipes
The core technology of KSINO wear-resistant and corrosion-resistant products comes from US and Germany. KSINO’s products have been in leading position in Chinese ceramic technology, ceramic metal composite technology, wear-resistant pipeline manufacturing, belt cleaning technology and other fields.
It is the common sense that no product in the world can adapt to all working conditions. On the basis of fully mastering the rules of wear and corrosion, it is correct to select the most appropriate materials. Therefore, KSINO has developed a wide range of wear-resistant and corrosion-resistant products. From metal materials to non-metallic materials, we will continue to develop more and better wear-resistant and corrosion-resistant products in the future.
-
Honeycomb Ceramic Foam Filter
Special foam ceramic filter:
Foam ceramic filter is a foam shaped ceramic product that is immersed in the ceramic slurry made of fire-resistant aggregate, sintering aid, binder and other micro powders and water, and after extruding the excess slurry, the remaining ceramic material wrapped around the foam fiber is dried and sintered at high temperature. The carrier of foam ceramic filter is generally polyurethane foam.
-
Aluminum Titanate-silicate Ceramics
Production technique: Isostatic Pressure
This product has excellent corrosion resistance, high room temperature & high temperature strength, superior air tightness and excellent thermal shock resistance. It has been widely used in aluminum products industry and low-pressure die casting industry.
-
High alumina refractory brick
Application Refractory bricks Classification Material Fire-resistance temperature ℃ Volume density g/cm³ Compressive strength Mpa Applications refractory fireclay block AL2O3≤45% Fireclay 1780 1 8 Light clay bricks are mainly used as thermal insulation materials in various kinds of industrial kilns, such as thermal boilers, glass kilns, cement kilns, chemical fertilizer gas making furnaces, blast furnaces, hot blast furnaces, coking furnaces, electric furnaces,... -
Mullite Products, Mullite ceramic honeycomb, Special heat storage ball
Packing method: plastic woven bag
Specification: 25kg/ bag
Note: KSINO can customize various models of products based on customer requirements.
If any needs, please feel free to contact us at your convenience!
-
Ash ditch combined panel
Cast stone products include cast stone pipe, cast stone plate, cast stone powder, cast stone composite pipe, etc.
Forged clamp type flexible pipe joint is divided into ring type and shoulder type. The products are mainly used in electric power, metallurgy, mining, coal, building materials, chemical industry and other industries.
-
-
Ball mill ceramic rubber plates
Rubber ceramic composite lining plate
Two-in-one lining plate
Three-in-one lining plate
-
Advanced ceramic valve
Advanced ceramic valve
The applications of metal valves has a history of more than one hundred years. Although the structure and materials have also been improved during the period, they are limited by the conditions of the metal materials themselves. It is increasingly unable to meet the needs of severe working conditions such as high wear and strong corrosion under special environment. The frequent leakage caused by short service life and poor sealing affects the stability of the system operation to a certain extent.
-
Silicon Carbide Ceramic lined pipes
The core technology of KSINO wear-resistant and corrosion-resistant products comes from US and Germany. KSINO’s products have been in leading position in Chinese ceramic technology, ceramic metal composite technology, wear-resistant pipeline manufacturing, belt cleaning technology and other fields.
It is the common sense that no product in the world can adapt to all working conditions. On the basis of fully mastering the rules of wear and corrosion, it is correct to select the most appropriate materials. Therefore, KSINO has developed a wide range of wear-resistant and corrosion-resistant products. From metal materials to non-metallic materials, we will continue to develop more and better wear-resistant and corrosion-resistant products in the future.
