The difference between emulsifier and colloid mill

High shear dispersing emulsifier

High shear dispersion emulsification is the process of quickly and uniformly dispersing one or more phases(Liquid, solid, gas)Entering into another immiscible continuous phase(Usually liquid)The process. Under normal circumstances, each phase is immiscible. When external energy is input, the two materials recombine into a homogeneous phase. Due to the high tangential velocity generated by the high-speed rotation of the rotor and the strong kinetic energy brought by high-frequency mechanical effects, the material is subjected to strong mechanical and hydraulic shear, centrifugal extrusion, liquid layer friction, impact tearing, and turbulence in the narrow gap between the stator and rotor, forming a suspended liquid (solid)/Liquid), lotion (liquid/Liquid) and foam (gas/Liquid). Thus, the immiscible solid, liquid, and gas phases can be dispersed and emulsified uniformly and finely in an instant under the combined action of corresponding mature processes and appropriate additives. After high-frequency cycling, stable high-quality products can be obtained.

colloid mill

Colloidal mill is driven by an electric motor through a belt drive to rotate the rotating teeth (or rotor) and the matching fixed teeth (or stator) at high speed. The processed material is pressurized by its own weight or external pressure (which can be generated by a pump) to generate a downward spiral impact force. When passing through the gap between the fixed and rotating teeth (adjustable gap), it is subjected to strong physical effects such as shear force, friction force, high-frequency vibration, etc., effectively emulsifying, dispersing and crushing the material, achieving the effect of ultrafine crushing and emulsification of the material. From a principle perspective,They all have the function of grinding and crushing,The refining effect of colloid mill is generally weaker than that of emulsifier, but it has a stronger adaptability to materials (such as high viscosity and large particles), and their material flow direction is more likely to flow downwards,So in many cases, it is used in the front of homogenizers or for high viscosity applications. Colloidal mills are often used for refinement when there are many solid substances.

But the specific situation depends on the material.

1If it is finely ground,Suggest using a colloid mill,as100Mmabove,It can be finely ground,If the original material particles were relatively small,Generally, an emulsifier is used,Like itself1-20Mm,It can be finely ground.

2If the solid content of the material is relatively high,Suggest using a colloid mill,Like peanut sauce,The functions of white carbon black, etc.Generally speaking, the refining effect of a colloid mill is weaker than that of an emulsifier, but it has a stronger adaptability to materials (such as high viscosity and large particles). Therefore, in many cases, it is used as a front-end homogenizer or in high viscosity situations. Colloidal mills are often used for refinement when there are many solid substances.

3If the solid content of the material is not high,So their effect is similar.You can see some analysis reports.

4It depends on the hardness of the material,If the hardness of the material is not too high,Low solid content,Suggest using an emulsion pump for grinding effect, such as grinding almonds with beta carotene(Low solid content)Grind iron oxide red iron yellow approximately5%The solid content.

5If the solid content is relatively high,Or if the viscosity is relatively high,Using colloid mills such as grinding silica, epoxy resin, etc.

Shanghai SijunSGNApplication fields of colloid mill:

Food industry: aloe, pineapple, sesame, ice cream, moon cake filling, cream, jam, fruit juice, soybeans, bean paste, bean paste, peanut milk, protein milk, soy milk, dairy products, malt milk, essence, various drinks, etc.

Chemical industry: paints, pigments, dyes, coatings, lubricants, greases, diesel, petroleum catalysts, emulsified asphalt, adhesives, detergents, plastics, fiberglass, leather, emulsions, etc.

Daily chemical products: toothpaste, detergent, shampoo, shoe polish, cosmetics, shower gel, soap, shampoo, etc.

Pharmaceutical industry: various types of syrups, nutrient solutions, traditional Chinese patent medicines and simple preparations, creams, biological products, cod liver oil, pollen royal jelly, vaccines, various ointments, various oral liquids, injections, intravenous drip, etc.

Construction industry: various coatings. Including interior and exterior wall coatings, anti-corrosion and waterproof coatings, cold porcelain coatings, colorful coatings, ceramic glazes, etc

Application areas of emulsifier:

Fine chemicals, pigments, dyes, coatings, paints, plastics, resins, hot melt adhesives, flame retardants, adhesives, finishing agents, surfactants, leveling agents, anti sticking agents, defoamers, brighteners, rubber additives, plastic additives, dye additives, coagulants, coagulants, surfactant solvents, silicone oil emulsification, resin emulsification, carbon ink dispersion

Petrochemical, lubricating oil, heavy oil blending, water in oil, oil-water, diesel emulsification, modified asphalt, emulsified asphalt, catalyst, wax emulsification

Pesticides and fertilizers Fertilizers, pesticide emulsifiers, pesticide adjuvants, pesticide intermediates, pesticide emulsions, insecticides, herbicides, seed coating agents, fungicides, plant hormones, urea, compound fertilizers, wet powder emulsions

Biomedical, cytoplasmic, serum vaccines, protein dispersants, drug creams, antibiotics, sugar coating

Daily chemicals, skin cream, skin cream, detergent, preservatives, hairdressing products, toothpaste, daily essence

Food industry, food additives, essence and spices, fruit juice, jam, ice cream, dairy products, chocolate, vegetable fat powder

Paint ink, interior and exterior wall paint, latex paint, nano paint, building adhesive, UV curable paint, ink, ink, carbon black, paint additive glaze, bentonite

Paper industry, pulp, adhesives, rosin dispersion, calcium carbonate, filler additives, pigment mixing, resin emulsification

Environmental protection, wastewater, sewage treatment, upgrading, recycling and utilization

Other: papermaking, ceramic glaze, rust remover, talcum powder