Part 1: Product Overview

Activated Clay is a porous adsorbent with a microporous structure and large specific surface area, produced from clay minerals (mainly bentonite) through inorganic acid activation, water rinsing, and drying. It appears as a fine powder in milky white, off-white, or pink, odorless, tasteless, and non-toxic.

During acid activation, impurities are dissolved, exchangeable cations between layers are replaced, and partial metal ions at the edges of the octahedral layer are leached, which "loosens" the montmorillonite lattice. The specific surface area increases from 80 m²/g of raw clay to 200–400 m²/g. This unique microstructure gives activated clay strong adsorption and catalytic capabilities, making it a core material in oil decolorization, petroleum refining, chemical purification, and other fields.

Our activated clay is made from high-quality bentonite ore using advanced wet activation technology, refined through a series of processes including selection, activation, water washing, drying, and grinding. The product features strong decolorization power, high activity, low oil retention, fast filtration speed, etc. All indicators meet or exceed the industrial standard HG/T 2569.

Core Value of Activated Clay

Upgrading natural bentonite into a high-efficiency adsorbent through acid activation technology. With strong decolorization ability and chemical inertness, it safeguards edible oil quality, improves chemical product purity, and treats industrial waste (wastewater, waste gas, waste residue).

Part 2: Core Advantages & Characteristics

Well-developed pore structure & large specific surface area

After acid activation, the specific surface area reaches 200–400 m²/g, forming an abundant microporous network that effectively adsorbs pigments, colloids, heavy metals, and other impurities.

Strong decolorization power & high purification efficiency

Decolorization power: 170–220, decolorization rate: above 99%. It has strong adsorption capacity for harmful pigments, phospholipids, saponins, etc., in various oils and petroleum products.

High activity & excellent reactivity

Activity: 180–200 mol/kg (0.1N NaOH ml/100g), with abundant activated acid sites and strong catalytic performance.

Low free acid & safe & reliable

Free acid (calculated as H₂SO₄) ≤ 0.20%. Fully water-washed to avoid secondary contamination of materials during use.

Low oil retention & good economic efficiency

Residual oil rate: only 5–7%, fast filtration, effectively reducing refining loss and operating costs. Dosage: 2%–5% of oil weight.

Excellent filtration performance

Outstanding filtration properties. The decolorized liquid is clear and transparent, with stable quality, no odor, no color reversion, and no acid reversion.

Good chemical stability

Insoluble in water, organic solvents, and various oils; almost completely soluble in hot caustic soda and hydrochloric acid. Relative density: 2.3–2.5, minimal swelling in water and oil.

Safe & environmentally friendly

Non-toxic and odorless. The used product can be reused without environmental pollution.

Core Indicators (Reference: HG/T 2569)

Item	Unit	Index Range
Decolorization Power	-	≥154–220
Activity	mol/kg	≥180–200
Free Acid (as H₂SO₄)	%	≤0.20
Moisture	%	≤5–12
Particle Size (0.076mm pass)	%	≥95
Heavy Metal (Pb)	mg/kg	≤10
Arsenic (As)	mg/kg	≤3
pH Value	-	7–8

Note: Actual indicators subject to your company's test report.

Part 3: Product Classification

Product Type	Form	Main Features	Main Applications
High-Efficiency Activated Clay	200-mesh powder	Decolorization power ≥170, high activity	Animal & vegetable oil decolorization, petroleum refining, chemical purification
Granular Activated Clay	20–120 mesh granules	Stronger adsorption, rich capillaries, low oil absorption	Oil decolorization & filtration, continuous adsorption, catalyst carrier
Decolorizing Clay	Powder / Granule	Decolorization rate ≥99%, residual oil 5–7%	Industrial base oil, waste oil regeneration, finished oil decolorization
Food-Grade Activated Clay	200-mesh powder	Strictly controlled heavy metals, meets food additive standards	Edible oil refining, wine clarification, sugar juice purification
Special Grade for Carbonless Copy Paper	Powder	Used with binders & additives to make color-developing coatings	Invoices, computer paper, credit cards

Part 4: Main Application Fields

1. Edible Oil Refining (Core Application)

Activated clay is the preferred adsorbent widely used for decolorization and refining of various vegetable and animal oils worldwide.

Main Functions

• Remove harmful pigments (chlorophyll, carotenoids, etc.)

• Remove peroxides, trace metals, soap residues, and phospholipids

• Remove aflatoxins, impurities, and odors

• Prevent color reversion and extend shelf life

Applicable Oils

• Vegetable oils: soybean, rapeseed, peanut, cottonseed, sunflower, palm, coconut, castor, tea, corn germ, rice bran, sesame, tung, safflower oil, etc.

• Animal oils: lard, tallow, fish oil, etc.

Usage Suggestion

Temperature, pressure, stirring intensity, and time should be optimized according to oil quality. Activate by heating to 80–100℃ before use. Heating above 300℃ causes loss of crystal water and structural changes, reducing decolorization effect.

2. Petroleum Industry

Petroleum refining & decolorization: petroleum, paraffin wax, kerosene, etc.

Waste oil regeneration: base oil, finished oil, waste oil.

Catalyst for petroleum cracking: solid acid catalyst for hydrocarbon cracking.

Lubricating oil polymerization agent, gasoline gas-phase refining agent.

3. Chemical Product Purification

Decolorization of paraffin wax, ethanol, sulfur, etc.

Benzene purification

Decolorization of fatty acids and higher glycolic acids

Cation removal via ion exchange

4. Food & Beverage Industry

Clarifier for wine and sugar juice

Beer stabilization to prevent turbidity and extend shelf life

Sugar refining & decolorization (cost reduced by ~60%; filter cake usable as feed)

5. Carbonless Copy Paper (High-Value Application)

Key raw material for color-developing coatings. Used for invoices, computer paper, bills, credit cards.

Advantages: clear printing, convenient, high efficiency, good confidentiality.

6. Environmental Protection

Wastewater treatment: color, turbidity, heavy metals, odor; printing & dyeing wastewater, municipal sewage, leachate

Oil adsorption in industrial wastewater

Waste gas treatment in sulfuric acid production

Deodorizer for refrigerators, toilets, etc.

7. Catalyst & Catalyst Carrier

As catalyst: hydrocarbon cracking, solid acid catalysis, light diesel cracking

As carrier: pesticides, fungicides, and other catalysts

8. Pharmaceutical & Defense Industry

Chemical defense absorbents and antidotes

Oral alkaloid antidotes

Vitamin A & B adsorbents

9. Other Applications

Rubber reinforcing agent
Coating filler
Moisture desiccant
Radioactive waste adsorbent

Medium/high-temperature polymerization catalyst
Fire extinguisher powder
Feed additive (used filter cake)

Part 5: Technical Indicators & Selection Guide

Physical & Chemical Indicators (HG/T 2569)

Item	First Class	Premium Class	Qualified
Decolorization Power	≥170	≥154	≥130
Activity (mol/kg)	≥200	≥180	≥160
Free Acid (%)	≤0.15	≤0.20	≤0.25
Moisture (%)	≤5	≤8	≤12
Particle Size (200-mesh pass, %)	≥95	≥93	≥90
Heavy Metal (Pb, mg/kg)	≤10	≤10	≤15
Arsenic (As, mg/kg)	≤3	≤3	≤5

High-Efficiency Activated Clay Indicators

Item	Index
Decolorization Power	170–220
Decolorization Rate	≥99%
Activity	180–200 mol/kg
Moisture	≤5%
Free Acid	≤0.2%
Residual Oil Rate	5–7%
pH	7–8

Selection Guide

Application	Recommended Product	Key Requirements
Edible Oil Refining	High-efficiency / Food-grade	Decolorization ≥170, qualified heavy metals
Petroleum / Waste Oil	Decolorizing / Granular clay	Decolorization ≥99%, residual oil ≤7%
Continuous Adsorption	Granular (20–120 mesh)	Uniform particle, fast filtration
Chemical Purification	High-efficiency activated clay	High activity, low free acid
Wastewater Treatment	General activated clay	Strong adsorption, cost-effective
Carbonless Paper	Special color-developing grade	High whiteness, good dispersibility