Yudu County, Ganzhou, Jiangxi, China sales3@liwei-chem.com 748718781@qq.com
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Microporous Calcium Silicate

    • Product Name Microporous Calcium Silicate
    • Chemical Name (IUPAC) Calcium silicate
    • CAS No. 1344-95-2
    • Chemical Formula CaSiO3
    • Form/Physical State Powder
    • Factory Site Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry sales3@liwei-chem.com
    • Manufacturer Anhui Liwei Chemical Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    846429

    Chemical Formula Ca2SiO4
    Density 180-250 kg/m³
    Thermal Conductivity 0.035-0.060 W/m·K
    Maximum Service Temperature 1000°C
    Melting Point 1500°C (approximate)
    Porosity peaks at 80-90%
    Color white
    Compressive Strength 0.3-1.0 MPa
    Water Absorption 40%-65% by weight
    Ph Value 9-11
    Sound Absorption good
    Fire Resistance Excellent (non-combustible)
    Chemical Resistance resistant to most chemicals except strong acids
    Specific Heat Capacity 0.84 kJ/kg·K
    Organic Content none

    As an accredited Microporous Calcium Silicate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Microporous Calcium Silicate is packed in 20 kg multi-ply paper sacks, lined with polyethylene for moisture protection, clearly labeled with product details.
    Container Loading (20′ FCL) Microporous Calcium Silicate is loaded in 20′ FCL, typically packed in 25 kg bags, totaling about 10-12 metric tons.
    Shipping Microporous Calcium Silicate is typically shipped in tightly sealed bags, drums, or bulk containers to prevent moisture absorption and contamination. It should be stored and transported in a dry, well-ventilated area, away from acids and damp conditions. Handle with care to minimize dust generation and ensure secure packaging during transit.
    Storage Microporous Calcium Silicate should be stored in a cool, dry, and well-ventilated area, away from moisture, acids, and incompatible materials. Keep containers tightly closed and off the ground to prevent contamination. Avoid exposure to water and high humidity to maintain product integrity. Use proper personal protective equipment when handling to avoid inhalation of dust.
    Shelf Life Microporous Calcium Silicate typically has an unlimited shelf life when stored in dry, sealed conditions, free from moisture and contaminants.
    Free Quote

    Competitive Microporous Calcium Silicate prices that fit your budget—flexible terms and customized quotes for every order.

    For samples, pricing, or more information, please call us at +8615365186327 or mail to sales3@liwei-chem.com.

    We will respond to you as soon as possible.

    Tel: +8615365186327

    Email: sales3@liwei-chem.com

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    Certification & Compliance
    More Introduction

    Microporous Calcium Silicate: Reliable Thermal and Structural Insulation from an Experienced Manufacturer

    Years of Manufacturing, Years of Learning

    Our team has dedicated countless shifts to producing microporous calcium silicate in a facility built on the backs of hands-on specialists, hands stained by daily work with raw minerals and the constant drive to improve our batches. We have seen insulation standards rise and customer demands shift, which shaped our practical understanding of how this material can make a difference beyond its datasheet. Rather than just offering a promise, we see each shipment as a reflection of decades-long refinement—part chemistry, part engineering, finished with careful inspection after every firing and sealing. All this comes from direct manufacturing, not from anyone in a broker’s chair.

    How Our Product Takes Shape

    Microporous calcium silicate starts its journey as limestone and silica, each chosen for natural purity and milled to a fine, reactive powder. As manufacturers, we monitor moisture, particle size, and slurry viscosity for every cycle, since even a small slip can cause uneven cell structure later in the kiln. After mixing, the slurry heads to autoclaves, where precise temperature and pressure unlock the signature micro-porous network. This is not a by-product of bulk production; each board, pipe section, or block is pressed, cured, and aged according to tight controls honed after years of direct manufacturing feedback. Material follows these steps under our own roof, right through cutting, calibration, and packaging. Each lot comes off our floor with a traceable history, not a faceless third-party batch number.

    Key Models and Specifications

    In our workshops, standard production flows into panels, pipe sections, and custom-milled slabs. The most demanded grades usually center around densities from 170 to 270 kg/m³, with thicknesses covering the range from slim 20mm up to robust 100mm blocks. We have produced models tailored to extremely tight dimensional tolerances, such as ±1 mm for thickness and ±2 mm for width and length, based on how much end users value tight joints for high-integrity insulation. Thermal conductivity at 200°C most often measures from 0.035-0.040 W/m·K, an outcome of the fine microstructure we cultivate batch after batch.

    Water repellency and low chloride content rise to the top of the checklist for customers in process and power industries, since any stray ions invite corrosion on steel infrastructure. To meet this expectation, our finished material typically shows less than 0.06% chloride by weight, confirmed batchwise in our own lab. For applications where the safety margin matters most—petrochemical, LNG, and power plants—such benchmarks come from deliberate choices in raw minerals and meticulous quality checks at every stage, never from industrial shortcuts.

    Our regular production covers lengths up to 1000 mm, widths to 600 mm, and we cut pipe insulation for common sizes from ½-inch to 24-inch diameter. For specific clients facing cramped, non-standard spaces, we work out custom runs at scale, rather than shunting the challenge to a distributor who can’t adapt manufacturing processes.

    Direct Manufacturing Means Full Traceability

    Many buyers have raised concerns about inconsistent performance from poorly traced products shuffled between different hands. We avoid such confusion entirely. Whether your engineers request last year’s COA, dimensional reports, or samples of a lot, the full story for each batch stays with us. We run our own materials through XRD, SEM, and TGA, building a real data set for each production cycle. This discipline lets us identify and correct problem spots not just with deskwork, but through hands-on corrections in the next cycle—something resellers and traders simply can’t do.

    Where Microporous Calcium Silicate Excels

    Those who specify our microporous calcium silicate understand that it is built for demanding insulation needs at mid to high service temperatures, usually between 250°C and 1000°C. Petrochemical engineers reach for it when fire risk and heat loss carry real consequences. Power plant maintenance crews rely on it to keep pipe runs and vessels dry, stable, and safely outside the dew point, even if a turbine or boiler runs red hot day after day.

    We see requests not only from classic power or refineries, but also from important infrastructure projects with strict fireproofing requirements, and from OEMs building high-performance industrial equipment. Traditional insulation wool will not support the same permanent load without compressing over time, especially in environments with mechanical vibration or point loads, while calcium silicate retains its form and thickness year after year. We have supplied boards to customers fabricating fire-stop barriers, tested in accredited labs for hours of protection under direct flame.

    How It Performs Compared to Alternatives

    Common insulations like mineral wool and glass fiber compete at lower cost brackets, but people who have installed, inspected, and repaired piping know that compression, sagging, and water absorption chip away at their rated R-value over time. Dense calcium silicate holds shape under serious compression, whether lined across vertical oven walls or fixed to hot process pipelines. Our clients have pulled decades-old blocks from wall cavities and found them still hard and dry, decades after installation.

    Aerogel delivers even lower conductivity in thin sections, but at bulk cost and with poor resistance to impact, making it better for specialized low-profile spaces than for the thousands of meters of piping found in plants. Fire resistant rated gypsum is cheap, but cannot take thermal or mechanical stress above 60°C, and crumbles under water. In hygiene-sensitive sites like food or pharma, our calcium silicate never harbors mold or rodent nests, a constant worry with wool or organic-core panels.

    We have produced materials that resist water uptake above 99% for up to 24 hours of submersion, based on direct immersion testing in our facility. For exposed or semi-shielded surfaces, this water repellency cuts the risk of hidden wet spots leading to corrosion under insulation, keeping long-term asset protection solid.

    Health, Safety, and Environmental Responsibility on the Floor

    Making calcium silicate is an involved process, but it doesn’t rely on hazardous hydrocarbons, persistent chlorinated organics, or any additive that persists in the air or soil. As plant operators ourselves, we make sure our product contains no asbestos or crystalline silica above regulated thresholds. Our workers wear proper PPE, and we have engineered our line to minimize airborne dust and waste.

    From a user’s perspective, microporous calcium silicate makes job sites safer compared to legacy insulation like asbestos, which we helped phase out long ago. Handling our boards does not irritate the skin or lungs like glass wool, and waste material gets handled in regular landfill streams rather than hazmat disposal. Users across industries have shared with us that replacing fragile or hazardous insulation with ours has slashed incident rates and clean-up headaches.

    Supporting Real-World Installation

    From detailed feedback gathered over years of plant visits and post-installation support, we’ve observed that roofing contractors, plant maintainers, and fabricators save labor costs with our calibrated boards, since tight joints and predictable thickness reduce field trimming. In pipeline jobs, workers appreciate easy scoring, snap cut, and shaping with basic tools, compared to the mess and fiber dust involved with wool. The boards glue and fit into fireproof doors, oven linings, and equipment housings, held in place by pins or clips.

    We’ve supplied insulation for modules that travel thousands of kilometers to site, so vibration and day-to-day handling during transport always enters our design choices. By controlling the baking, curing, and handling phases, we target high flexural and compressive strength, verified by ASTM and EN tests run on our own lines. This focus shows up when contractors handle our boards—minimal breakage, less mess, fewer lost pieces on the finished job.

    Adaptation and Customization from the Source

    We do not simply sell standard boards; we build for each project’s thermal envelope, mechanical constraints, and fire performance requirements. Custom scoring, pre-molded pipe covers shaped for elbows, and specialty flame retardant coatings have all come from direct conversations with engineers and contractors. These aren’t catalog products—each run reflects real requests, developed over rounds of trial samples and test pieces until everyone involved believes in the outcome. Unlike traders, we adjust curing cycles, pore modifiers, and finishing steps right on the shop floor.

    Lessons in Quality and Reliability

    After years shipping insulation by the ton to customers with tight deadlines and even tighter space constraints, we have learned no batch is perfect unless it meets the end-user’s real-world needs. We have held back entire runs because a single measurement fell short of our thermal or mechanical criteria. This degree of oversight comes from walking the floor, not just looking over purchase orders or sales spreadsheets. We have built a reputation for troubleshooting—dispatching supervisors onsite to check insulation installs or to replace material that failed testing for a critical project.

    We reject the habit of generic packing or wide spec tolerances. Each order leaves our docks with a set of direct measurements, real test data, and a living connection back to the manufacturing process. Our pipeline for product feedback runs straight from the user—installers, maintenance leads, engineers—back to our lab and production crew. This ongoing loop lets us spot trends, flag emerging problems, and tweak our recipes or techniques before any shortfall becomes a headache on site.

    Supply Chain Clarity Only a Manufacturer Delivers

    No one likes a guessing game when a plant is offline, waiting for reliable insulation to restart production. With direct control from raw minerals through finished board, we avoid the confusion that comes when a distributor switches sources or mixes old and new lots. Regular audits and round-trip visits to mines and chemical suppliers help cement our quality from the start. We see exactly who molded, cut, and packed every load, so any question can get an immediate and honest answer.

    Why We Remain Committed to Excellence in Microporous Calcium Silicate

    Supplying hundreds of industrial builders, facility engineers, and fireproofing contractors has taught us that performance comes from every stage of production, not just a final check at shipping. Detailed equipment calibration, close-knit teamwork at each production line, and deep respect for the science behind microporous ceramics inform every board and pipe section we make. Real-world demands, feedback loops, and the deep knowledge base built over years drive our commitment—not distributor speculation or reseller claims.

    Those who have worked with our insulation boards in boiling hot pipe chases, over live equipment, or in high-paced retrofits know the difference is more than a test report. It is in the crisp break, the way a joint closes up, the way the board rebounds—not crumbles—after handling. It is about reliable fire safety and thermal retention, about walking away from a job confident the insulation will hold up for decades, not just years.

    Looking Ahead: Continuous Improvement as the Manufacturer

    We keep investing in new equipment, better testing, and smarter feedback collection. We test every sample in context—against the latest fire standards, with the average field installer in mind, not just the lab technician. Partnerships with power stations, petrochemical builders, and industrial clients keep our design priorities grounded. Direct communication with these professionals helps us spot opportunities for improved matting, shape precision, and longer-lasting coatings, all without raising unnecessary costs.

    Every advancement, every tweak to raw input or pore structure, gets weighed against our experience with tough service conditions and the demands of jobs where downtime is measured in thousands of dollars per hour. Our identity remains bound up in every load, every test coupon, and every successful installation that outlasts harsh environments.

    Final Thoughts: Built on Experience, Delivered with Integrity

    Manufacturing microporous calcium silicate is a craft grounded in science and seasoned by years on the plant floor. Our product stands as proof that direct production produces tangible advantages—in quality, service, and trusted performance across countless demanding applications. Those looking for a real solution and real accountability will find it here, not in commodity bins or countless handoffs between traders. Our name and reputation ride on each board and pipe cover, reflecting our daily work, hard-earned knowledge, and the trust of those who put our material to the test.