Rice Husk

Rice Husk Specification

Chemical Composition
Silica (SiO2) 85-90%, Carbon 7-10%

Form
Solid, flaky, fibrous

Density
160 Gram per cubic centimeter(g/cm3)

Surface Finish
Coarse, fibrous

Water Absorption
High absorptive capacity

Hardness (%)
~40% as compared to sand

Application
Industrial

Usage & Applications
Fuel in boilers, raw material for activated carbon, soil amendment, silica source, insulation, lightweight aggregate

Purity(%)
Silica purity up to 90% (after processing)

Melting Point
About 1687 K (for silica content)

Product Type
Refractories

Types of Refractories
Basic Refractory

Shape
Elongated, fibrous, irregular husk

Porosity
High

Dimensional Stability
Reversible

Strength
High

Specific Gravity
1.2 - 1.4

Thermal Conductivity
Low, typically 0.03 - 0.06 W/m.K

Color
Light Brown to Pale Yellow

Volatile Matter
Up to 70%

Biodegradability
Highly biodegradable unless reinforced or calcined

Ash Content
15 - 20% (by weight)

Moisture Content
8 - 10% (as received)

Particle Size
0.5 - 2 mm (typical)

Sourcing
Derived from paddy milling

pH Value
6.8 - 8.0

Bulk Volume
0.9 - 1.4 m3 per 1000 kg

Loss on Ignition
15 - 18%

Odour
Mild earthy/organic

Rice Husk Trade Information

Minimum Order Quantity
100 Kilograms

Payment Terms
Cash in Advance (CID)

Supply Ability
5000 Kilograms Per Month

Delivery Time
7 - 10 Days

Main Export Market(s)
Central America, Middle East, Australia, South America, Asia, Africa, North America, Eastern Europe, Western Europe

Main Domestic Market
All India

About Rice Husk

Rice husk, the outer layer of rice grains, is a fibrous byproduct of rice milling. It contains silica, cellulose, hemicellulose, and lignin, providing strength and durability. Rich in fiber and antioxidants, it aids digestion and offers potential as a natural pesticide. Processed into ash, it is used in construction (as a lightweight aggregate) and energy production (as biomass fuel). The husk is also utilized in the manufacturing of paper, textiles, and bioplastics. Rice husk is valued for its sustainability, offering eco-friendly solutions in industries like agriculture, construction, and renewable energy. It reduces waste and promotes environmental health.

High Silica Content for Industrial Efficiency

Rice husk's impressive silica concentration (up to 90% after processing) makes it a sought-after material in various industrial applications. Its use as a source for high-purity silica supports numerous sectors, from insulation to refractory manufacturing, ensuring both cost-efficiency and material performance.

Multipurpose Applications in Industry

This rice husk variant excels as a fuel in industrial boilers due to its significant volatile matter and low thermal conductivity. Furthermore, it serves as an eco-friendly raw material for activated carbon, a lightweight aggregate in construction, and an effective soil amendment due to its high porosity and organic content.

Sustainable and Biodegradable Solution

Sourced directly from rice milling processes, these husks offer high biodegradability unless calcined or reinforced, making them environmentally friendly. Their utilization in agriculture and manufacturing supports sustainable practices by maximizing the value of renewable resources and reducing waste.

FAQ's of Rice Husk:

Q: How is rice husk with a particle size of 0.5 - 2 mm sourced?

A: This rice husk is derived from the milling of paddy grains, which separates the outer fibrous covering from the rice. The husks are then sieved to achieve the desired particle size of 0.5 - 2 mm, ensuring consistency and quality for industrial use.

Q: What are the main industrial applications of this rice husk?

A: This rice husk is used as boiler fuel, a raw material for activated carbon, lightweight aggregate in construction, soil amendment in agriculture, insulation, and as a source for extracting high-purity silica. Its versatile properties cater to a wide range of sectors.

Q: When should rice husk be used as a soil amendment?

A: Rice husk is ideal for use as a soil amendment before planting or during soil preparation. Its high porosity and organic content improve soil structure, aeration, and moisture retention, benefiting plant growth throughout the cropping season.

Q: Where can this rice husk be sourced or obtained?

A: This high-quality rice husk is commonly sourced from rice processing mills and is available through manufacturers, exporters, suppliers, and traders in India, who cater to both domestic and international markets.

Q: What is the process involved in converting rice husk to activated carbon?

A: Activated carbon from rice husk is produced through pyrolysis or chemical activation. The husk is heated in a controlled environment (often with activating agents) to develop its porous structure, resulting in a highly adsorptive material for filtration and purification.

Q: What benefits does rice husk offer for insulation applications?

A: Thanks to its low thermal conductivity (0.03 - 0.06 W/m.K) and high porosity, rice husk acts as an effective insulator. It protects industrial equipment from heat loss while providing a lightweight, eco-friendly alternative to conventional insulation materials.