Our Products
Expanded perlite for construction/horticultural use
Lightweight, fire-resistant perlite, suitable for building insulation and energy-saving applications.
Hydrophobic perlite for cementing in oilfields
High-performance perlite for use in drilling muds, oilfield filtration and fluid loss control.
Certified filter aids for beer, wine, beverages and edible oils, delivering a 15% reduction in filtration costs.
Food-grade perlite
Perlite for cryogenic applications
Expanded perlite for use in liquefied natural gas, cryogenic storage tanks and refrigerated insulation.
Expanded perlite for construction/horticultural use
Expanded perlite is a white granular material with a honeycomb-like internal structure, produced by preheating perlite ore sand followed by instantaneous high-temperature calcination and expansion.
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Expanded perlite is a white granular material with a honeycomb internal structure, produced by preheating and instantaneous high-temperature calcination of perlite ore sand.
The principle is as follows: perlite ore is crushed into ore sand of a specific particle size. Upon rapid heating (above 1000°C), moisture within the ore sand vaporises and expands within the softened ore particles, forming a porous structure. The volume expands to 10-30 times its original size. Expanded perlite is categorised into three forms based on expansion conditions and application: open-cell, closed-cell, and balloon-cell.
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·Lightweight
·Porous
·Thermally insulating
·Non-combustible
·Sound-absorbing
·Water-resistant
·Non-toxic
·Corrosion-resistant
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Construction Industry: Lightweight aggregates, lightweight insulation materials, fireproofing materials, insulating mortars, etc.
Industrial Applications: Cryogenic and cryogenic engineering insulation, industrial equipment insulation, pipeline insulation, etc.
Other Uses: Filtration aids, fillers, grinding materials, slag-collecting agents in steelmaking processes, etc.
Agriculture and Horticulture: Soil conditioners, hydroponic growing media, pesticide release retardants, etc.
Content (%)
Closed-cell perlite for construction
Closed-cell perlite is a novel expanded perlite product characterised by high strength, lightweight properties, thermal insulation, excellent electrical insulation, high purity, uniform particle size, and low water absorption.
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Closed-cell perlite is a novel expanded perlite product characterised by high strength, lightweight properties, thermal insulation, excellent electrical insulation, high purity, uniform particle size, and low water absorption. This product is manufactured by heating perlite mineral sand of specific particle size using electrical energy. The expanded particles undergo instantaneous high-temperature melting on their surfaces, overcoming interstitial surface tension to freely close. Upon cooling, this forms a continuous vitrified surface layer while preserving an intact porous hollow structure internally. The unique production method ensures the product retains the purity of perlite's natural inorganic chemical composition. Its excellent lightness, strength, and electrical insulation properties determine its wide range of applications.
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Visually appearing as slightly rounded granules, it possesses a continuous vitrified, smooth outer surface with a reflective sheen. Exhibiting pronounced capillary adsorption and compressive strength, it demonstrates high compatibility with materials such as clay and cement in a wet slurry state, i.e., excellent workability.
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It can be used as an aggregate substitute for river sand in formulating internal and external wall insulation mortars, producing high-grade insulating decorative panels, as the primary material for composite insulation coatings, a key component in filter aids, refractory bricks, and enamel materials. It also serves as a primary ingredient in high-grade insulation materials and lightweight fillers for construction, metallurgy, industrial furnace electrical insulation, and thermal pipelines.
Chemical composition
Performance indicators
Hydrophobic vitrified microspheres are a multifunctional filler material capable of enhancing product quality and reducing costs across numerous industries. They appear as white or off-white, loose particles with excellent flow properties. Under microscopic examination, they manifest as spherical structures with a silvery sheen, featuring a hollow core enclosed within a rigid outer shell.
Hydrophobic perlite for cementing in oilfields
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Hydrophobic vitrified microspheres are lightweight, multifunctional fillers produced via a high-temperature expansion process. They appear white or silvery-white in colour, with a loose, free-flowing consistency. Microscopically, they manifest as hollow, rigid spheres exhibiting excellent chemical stability.
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Low density: Significantly reduces overall product density, minimising weight
High strength: Hollow spherical shells are robust and resistant to breakage
Corrosion resistance: Withstands acids and alkalis with stable chemical properties
Thermal insulation: Low thermal conductivity provides excellent heat retention
Environmentally friendly and safe: Non-toxic, harmless, and recyclable
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Oilfield Cementing Materials
Lightweight Refractory Castables
Coatings and Fillers
Building Materials, Insulation Materials
Other Industrial Applications Requiring Lightweight Filling
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The typical dosage is 10–15% by weight of the cement, which may be directly blended with dry mixes or stirred with water at the appropriate ratio. The proportion may be adjusted according to specific application requirements to achieve optimal workability and strength characteristics.
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Store in a dry environment to prevent moisture absorption and caking.
Handle with care during transportation to avoid breakage.
For bulk transport, use tonne bags or bulk loading.
Food-grade perlite
Food-grade perlite is extensively utilised across industries including brewing, pharmaceuticals, starch sugars, enzyme preparations, food additives, and fine chemicals. It has earned the trust of numerous manufacturers and secured a substantial market share.
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Product Name: Perlite Filter Aid for Food Applications
Production Process: Selected premium perlite ore is heated to expand, then crushed and screened.
Properties: Non-toxic, odourless, resistant to acids and alkalis, rapid filtration rate, minimal residue.
Compliance Standards: Meets National Standard GB26313-2010 and relevant international food industry requirements.
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SiO₂: 74.95% (high silica content, excellent chemical stability)
Al₂O₃: 12.83% (enhanced acid and alkali resistance)
Fe₂O₃: 0.76% (low iron content, ensuring food safety)
Lightweight, rapid filtration rate, soft filter cake, significantly reduces turbidity and suspended solids.
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Seasonings: monosodium glutamate, soy sauce, vinegar
Beverage industry: fruit juices, alcoholic beverages, beer, dairy products, tea drinks
Sugar industry: white sugar, brown sugar, honey
Pharmaceutical industry: antibiotics, vitamins, traditional Chinese medicine preparations
Water treatment: mineral water, purified water filtration
Industrial oils: decolourisation of edible oils, purification of mechanical lubricants
Other: Beverage clarification, flavourings and essences, additive refinement, citric acid, carrageenan, enzyme preparations, and other filtration industries.
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Filtration equipment: Compatible with various food-grade plate-and-frame filters, leaf filters, and filter aids
Recommended dosage: Adjust according to the turbidity of the original liquid and target clarity, typically 0.1–1%
Filter cake disposal: Filter cake may be treated as general solid waste, environmentally safe and non-hazardous
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Store in a dry, well-ventilated environment to prevent moisture absorption.
Prevent bag rupture and moisture-induced caking during transportation.
Complies with food safety requirements and is suitable for direct use in food production.
Physical Properties of Food-Grade Perlite
Pearlite (expanded perlite) is produced by crushing and high-temperature calcination of vitreous mountain rock, resulting in loose, spherical white granules. It is non-toxic, odourless, non-combustible, and non-corrosive. Owing to its exceptionally low thermal conductivity, reliable chemical stability, excellent flow properties, and extremely low bulk density, it finds widespread application across diverse sectors including industry, agriculture, national defence, environmental protection, chemical engineering, food processing, and construction.
Perlite for cryogenic applications
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Product Name: Perlite for Cryogenic Applications
Particle Size Range: 50–80 mesh, 70–90 mesh
Characteristics: Acid and alkali resistant, non-toxic, withstands extreme temperatures, suitable for deep-cold filtration environments
Applications: Primarily used in cryogenic filtration processes, such as in brewing, pharmaceuticals, and chemical industries
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SiO₂：75.42%
Al₂O₃：14.26%
Fe₂O₃：1.01%
CaO：1.72%
MgO：0.37%
K₂O：4.01%
Na₂O：3.26%
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Petrochemical and Energy Sector: For cryogenic storage tanks in oilfield natural gas liquefaction and refining processes;
Liquefied Natural Gas (LNG) Storage and Transport: As thermal insulation filling material for LNG, liquid nitrogen, liquid argon, liquid oxygen, and liquid hydrogen storage tanks;
Cold Chain Logistics and Frozen Storage: Large-scale cold storage facilities, freezer warehouses, and refrigeration equipment;
Aerospace / Scientific Research Equipment: For laboratory cryogenic vessels (e.g., Dewar flasks) and aerospace liquid propellant storage.
Perlite for Cryogenic Applications — Technical Specifications for Perlite Sand
Flow velocity test
We conducted flow rate and filter cake formation tests on the perlite filter aid using a vacuum filtration apparatus.
Using clean water as the test medium, the filtration flow rate at standard thickness was 0.93 mL/s (approximately 56 mL/min), forming a filter cake with uniform structure and well-distributed pores.
Test results demonstrate the product's excellent permeability and shape retention, making it suitable for widespread application in beverage, pharmaceutical, and chemical liquid filtration.
Moreover, we can create three tiers: fast, medium, and slow.
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