The company is committed to the development, promotion and application of new wear-resistant materials, new technologies and new products, and has established long-term cooperative relationships with harbin boiler, dongguo, dongfang electric, wuxi huaguang, sichuan boiler, etc. It has been recognized as "henan province science and technology small and medium-sized enterprises" and "henan province innovative pilot enterprise" by the henan provincial department of science and technology; "henan province bauxite high temperature material engineering technology research center" recognized by the henan provincial department of industry and information technology; december 2019 it passed the integration certification of industrialization and informatization by the national industry and information technology commission in march; it was recognized as a "specialized, special and innovative" enterprise in 2020; it was recognized as a national high-tech enterprise in 2021.
Why Choose Us
Our factory
The company is committed to the development, promotion and application of new wear-resistant materials, new technologies and new products, and has established long-term cooperative relationships with harbin boiler, dongguo, dongfang electric, wuxi huaguang, sichuan boiler, etc.
Our products
High density and high strength ceramsite proppant,low density and high strength ceramsite proppant,medium density high strength ceramsite proppant,ultra low density and high strength ceramsite proppant.
Production market
Zheng nai petroleum's fracturing proppant products fully comply with the standards of the fracturing acidification center proppant evaluation laboratory of langfang branch of china petroleum exploration and development research institute, the american stim-lab, and the british frac-tech laboratory.
Our certificate
The product performance has reached the international leading level and passed american petroleum institute apiq1 certification.The laboratory of henan zhengnai new materials co., ltd. Has passed the national laboratory accreditation cnas certification.
Ceramsite sand plays an important role in the oil and gas extraction process. Its main function is to enter rock cracks as a filler during the fracturing process to support the cracks from closing due to stress release, thereby maintaining high conductivity, allowing oil and gas to flow smoothly, and increasing production.
The fracking proppant sand is made by fine processing with high content of bauxite, mixing some chemical agents and phase-changing agents to produce small round particles of different sizes, which are sintered at high temperature, the product has the characteristics of high strength, low crushing rate and good sphericity under closed pressure. It is a good product for fracturing and reforming formation in oil and gas field.
In the process of oil and gas extraction, after fracturing treatment of high closing pressure and low permeability mineral deposits, fluid needs to be injected into the rock base to exceed the fracture strength of the formation, causing cracks in the rock formations around the wellbore to form a channel with high-level flow capabilities. . During this process, oil fracturing proppant plays a role in supporting the fractures from closing due to stress release, thereby maintaining high conductivity, allowing oil and gas to flow smoothly, and increasing production.
What is Ceramsite Sand?
Ceramsite sand, also known as ceramic sand, is a granular material crafted from high-quality bauxite, coal, and other natural raw materials. Its production involves sintering these materials at high temperatures, resulting in a durable, lightweight, and porous aggregate. The unique manufacturing process imbues ceramsite sand with properties that make it an attractive choice in a range of industries.
Advantages of Ceramsite Sand
High refractoriness
The refractoriness of ceramic sand can reach up to 1800℃, which is suitable for different materials such as stainless steel, alloy steel, carbon steel, ductile iron, gray iron, etc. It can effectively reduce the sand sticking to the casting and make it easy to clear the sand later.
Low thermal expansion
The thermal expansion rate is much lower than that of silica sand and chromite sand, which is similar to that of fused ceramic sand, which can obviously improve the dimensional accuracy of the casting, reduce the defects such as casting veining and sand trapping, and have a high yield of the casting.
High sphericality
Ceramic sand is nearly spherical in shape, with angular coefficient ≤1.15, which not only has good fluidity and good filling, but also has tight shooting sand and high permeability of sand core.
Lower density
The stacking density is small, and ceramic sand is more economical than fused ceramic sand to make the same sand core, which helps to reduce the production cost.
Application of Ceramsite Sand
Lightweight construction applications
In the construction industry, the lightweight nature of ceramsite sand has become a game-changer. Its use in lightweight concrete and precast concrete products has gained popularity due to its low density and excellent insulation properties. The incorporation of ceramsite sand reduces the overall weight of concrete structures without compromising strength, making it ideal for applications where weight is a critical factor.
Enhancing soil quality in agriculture
Ceramsite sand has found a valuable application in agriculture, particularly in soil improvement projects. When mixed with soil, ceramsite enhances water retention and drainage, fostering optimal conditions for plant growth. Its porous structure allows for better aeration of the soil, preventing waterlogging and promoting healthier root development. As a sustainable soil amendment, ceramsite sand contributes to improved crop yields and overall soil health.
Oil and gas industry advancements
The oil and gas industry has embraced ceramsite sand for its use in hydraulic fracturing, commonly known as fracking. Ceramsite sand, with its high crush resistance and thermal stability, serves as a proppant in the fracking process. It props open fractures in the rock formation, allowing for the efficient extraction of oil and gas. This application underscores ceramsite sand's crucial role in advancing energy exploration and production techniques.
Wastewater treatment solutions
Environmental projects benefit significantly from the use of ceramsite sand in wastewater treatment. Its porous structure provides an ideal substrate for the growth of beneficial microorganisms that aid in the removal of pollutants from wastewater. Ceramsite sand-based filtration systems are known for their efficiency in treating industrial and municipal wastewater, contributing to cleaner water and sustainable environmental practices.
Landscaping and recreational applications
Ceramsite sand's aesthetic appeal and durability make it a popular choice in landscaping projects. Whether used in artificial beaches, golf course bunkers, or decorative pathways, ceramsite sand adds a touch of elegance while providing excellent drainage and stability. Its versatility extends to recreational areas, where it is used in sports turf infill, creating surfaces that are both safe and playable.
Challenges and ongoing research
While ceramsite sand has proven to be a versatile and reliable material, ongoing research aims to address challenges and explore new possibilities. Researchers are investigating ways to optimize its manufacturing process, improve its performance in specific applications, and expand its use in emerging industries. The continuous evolution of ceramsite sand underscores its potential to redefine standards across various sectors.
Bauxite ceramsite sand
Also known as petroleum proppant ceramsite sand, it is a substitute for medium and low-strength proppant such as natural quartz sand, glass balls, and metal balls, and has a good effect on increasing oil and natural gas production.
Clay pottery
It is made of clay, sub-clay, etc. As the main raw material, processed, granulated, and burned to form light coarse aggregate with a particle size of more than 5 mm.
Shale ceramsite
Also known as expanded shale, it is a light coarse aggregate with a particle size of more than 5mm, which is made from clayey shale, slate, etc. That is crushed, screened, or ground into balls and expanded by burning.
Fly ash ceramsite
It uses solid waste as the main raw material, adds a certain amount of cement and water, and is processed into balls, sintered and expanded or naturally cured to form light coarse aggregate with a particle size of more than 5mm.
Rubbish clay
After processing municipal solid waste, it is granulated and roasted to produce sintered ceramsite.
Other raw materials ceramsite
It also includes gangue ceramsite, biological sludge ceramsite, river bottom mud ceramsite, etc.
The fine particle part of ceramsite sand is called ceramsite sand. It is mainly used to prepare lightweight aggregate concrete and lightweight mortar instead of natural river sand or mountain sand. It can also be used as acid-resistant and heat-resistant concrete fine aggregate. The main varieties include clay pottery sand, shale pottery sand and fly ash pottery sand.
The Production Process of Ceramsite Sand
The ceramic rotary kiln equipment is composed of a rotating cylinder body, a supporting device, a bearing device with a stop wheel, a kiln head, a kiln tail sealing device, and a coal injection pipe device.
In addition to the main transmission, the transmission part is also provided with an auxiliary transmission device to ensure that the kiln body can still rotate slowly to prevent the kiln body from being deformed when the power supply of the main transmission is interrupted. The kiln head adopts a shell-type seal, and the kiln tail is equipped with an axial contact type sealing device to ensure the reliability of the seal.
The slope of the kiln body is horizontal. The whole kiln body is supported by a supporting roller device, and there is a stop wheel device that controls the kiln body to move up and down.
The working temperature reaches (950 °c ~ 1050 °c) calcined ultra-fine kaolin, the process of the operation of ceramsite sand, and then according to the number of materials to adjust the level of temperature, and ultimately achieve their own goals, this calcination technology the advantages are low energy consumption, product dehydration, decarburization and whitening, and good performance stability.
Performance Characteristics of Ceramsite Sand
Low density and light weight
The bulk density of ceramsite itself is less than 1100kg/m3, generally 300~900kg/m3. The density of concrete made with ceramsite as aggregate is 1100~1800kg/m3, and the corresponding compressive strength of concrete is 30.5~40.0mpa. The biggest feature of ceramsite is that it is hard on the outside and has many micropores on the inside. These micropores give the ceramsite its lightweight properties. The density of no. 200 fly ash ceramsite concrete is about 1600kg/m3, while the density of ordinary concrete of the same grade is as high as 2600kg/m3. The difference between the two is 1000kg/m3.
Heat insulation
Because of its porous interior, ceramsite has good thermal insulation properties. The thermal conductivity of concrete prepared with it is generally 0.3~0.8w/(mok), which is 1~2 times lower than ordinary concrete. Therefore, ceramsite buildings have a good thermal environment.
Excellent fire resistance
Ordinary fly ash ceramsite concrete or fly ash ceramsite blocks integrate thermal insulation, earthquake resistance, frost resistance, fire resistance and other properties. In particular, the fire resistance is more than 4 times that of ordinary concrete. For the same fire resistance period, the plate thickness of ceramsite concrete is 20% thinner than that of ordinary concrete. In addition, fly ash ceramsite can also be used to formulate refractory concrete with a refractory temperature below 1200°c. At a high temperature of 650°c, ceramsite concrete can maintain 85% of its strength at room temperature. Ordinary concrete can only maintain 35% to 75% of its strength at room temperature.
Good seismic performance
Ceramsite concrete has good seismic resistance due to its light weight, low elastic modulus and good deformation resistance. During the 1976 tangshan earthquake, the four ceramsite concrete slab buildings built in tianjin were basically intact and could be used as usual. A considerable number of brick-concrete buildings around it were damaged by the earthquake to varying degrees. Although this is related to the building structure system, the excellent seismic performance of ceramsite concrete is also an important reason. In 1976, a strong earthquake of magnitude 9 occurred in the friuli region of italy. Statistics show that the damage rate of brick-concrete buildings was 40% to 60%, the damage rate of clay hollow brick buildings with frame structures was 33%, and the damage rate of ceramsite concrete buildings was only 5%. This shows the seismic performance of ceramsite.
Low water absorption, good frost resistance and durability
Ceramic concrete has better resistance to acid, alkali corrosion and frost resistance than ordinary concrete. No. 250 fly ash ceramsite concrete has a strength loss of no more than 2% after 15 freeze-thaw cycles. In 1976, relevant departments conducted actual measurements on ceramsite concrete projects built across the country since 1985. The results showed that whether they were prefabricated or cast-in-situ, indoor or outdoor, the steel bars contained were not corroded, and the measured carbonation depth generally no more than 30㎜, and the strength can continue to increase in the later stage. It can be seen that ceramsite concrete is an excellent building material and should be vigorously promoted and used.
Certifications
Our Factory
The company is committed to the development, promotion and application of new wear-resistant materials, new technologies and new products, and has established long-term cooperative relationships with harbin boiler, dongguo, dongfang electric, wuxi huaguang, sichuan boiler, etc. It has been recognized as "henan province science and technology small and medium-sized enterprises" and "henan province innovative pilot enterprise" by the henan provincial department of science and technology; "henan province bauxite high temperature material engineering technology research center" recognized by the henan provincial department of industry and information technology; december 2019 it passed the integration certification of industrialization and informatization by the national industry and information technology commission in march; it was recognized as a "specialized, special and innovative" enterprise in 2020; it was recognized as a national high-tech enterprise in 2021.
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