Titanium dioxide (TiO₂) is a naturally occurring mineral that is mined from the earth, processed and refined, and added to a variety of foods, as well as other consumer products. White in color, it is used to enhance the color and sheen of certain foods and is also key for food safety applications. In its natural state it exists in different bulk crystalline forms, such as anatase and rutile, but during processing it is ground into a very fine powder.

Package:
25KG/50KG Woven bag with inner, or 1000kg big woven plastic bag.



Company Information
     Loman Chemical Group (include Shanghai Loman Chemical Co Ltd; Wuhu Loman Chemical Co Ltd and Wuhu Loman Titanium Industial Co Ltd.)is one of the main titanium dioxide manufacturers in china, producing various high quality Anatase and Rutile titanium dioxide. Loman brand products, has being widely used in paper, paint, plastic, ink, coating, rubber, cosmetic, food, fiber, etc.
      In order to meet different requirements of various customers, we actively expand producing other pigments, include Lithopone, Barium sulfate and Silica. Annual production volume of anatase and rutile grade titanium dioxide have reached 100,000 tons, lithopone 30.000 tons, barium sulfate 50.000 tons and precipitated silica 8.000 tons. The Loman brand is one of the famous brands in China, having great popularity both at home and abroad. Our products have been widely used in European, North America and Southeast Asia. 

Our advantages:
1)With the most professional manufacturers,High quality and high safety product

2)Professional consulting services are availabe for you at antyime

3)Have a favorable price ,reliable quality

4)Complete products meet your purchasing need

2: Clarification mechanism of coagulant

Chemical coagulation is a process in which chemical agents (coagulants) are added to water treatment to make colloidal dispersion system destabilize and agglomerate. In the coagulation process, small suspended particles and colloidal impurities are aggregated into larger solid particles to separate particulate impurities from water, which is called coagulation clarification.

After adding coagulant into water, colloidal particles and other small particles can be polymerized into larger flocs through the comprehensive action of mixing, coagulation and flocculation. The whole process of coagulation and flocculation is called coagulation.

(1) Destabilization and condensation of colloids

Adding electrolyte to water can compress the electric double layer and destabilize the colloid. The main mechanism is that the electric double layer of colloidal particles in water is compressed or neutralized by adding aluminum salt or iron salt coagulant. The coagulant and raw water are mixed rapidly and evenly, and a series of chemical reactions are produced to destabilize. This process takes a short time, generally about 1 min. Some cationic polymers can also play a role in the destabilization and condensation of colloids in water. These polymers have a long chain structure and positive charge in water. Their destabilization and condensation of colloids in water is due to the interaction of van der Waals force adsorption and electrostatic attraction.

(2) Flocculation and formation of floc (alum)

The particle size of the initial flocculate formed by colloid destabilization and coagulation in water is generally more than 1 m. at this time, Brownian motion can no longer push them to collide and form larger particles. In order to make the initial flocs collide with each other to form large flocs, it is necessary to input additional energy into the water to produce a velocity gradient. Sometimes it is necessary to add organic polymer flocculant into water, and the adsorption bridging effect of long chain molecules of flocculant is used to improve the probability of collision and adhesion. Flocculation efficiency usually increases with the increase of flocculate concentration and flocculation time.

Compared with polyaluminum chloride, polyaluminum chloride has the advantages of high density, fast settling speed and wide pH adaptability; the coagulation effect is less affected by temperature than that of polyaluminum sulfate; however, when adding ferric salt, it should be noted that when the equipment is not in normal operation, the iron ions will make the effluent color, and may pollute the subsequent desalination equipment.