Riddhi Metal & Chemicals Dairy Road, Mahesana, Gujarat

We supply a wide range of Precipitated Silica, which is used for strengthening polymers, in rubber and elastomer, in powdered foodstuffs, pharmaceutical formulations etc. Our Precipitated Silica is also used as carriers, fillers, coating agents or for improving mechanical properties of the end product.   Precipitated silica is a silica (SiO2) produced by precipitation from a solution containing silicate salts. The production of precipitated silica starts with the reaction of an alkaline silicate solution with a mineral acid. Sulfuric acid and sodium silicate solutions are added simultaneously with agitation to water. Precipitation is carried out under alkaline conditions. The choice of agitation, duration of precipitation, the addition rate of reactants, their temperature and concentration, and pH can vary the properties of the silica. The formation of a gel stage is avoided by stirring at elevated temperatures. The resulting white precipitate is filtered, washed and dried in the manufacturing process.Na2 (SiO2)7 + H2SO4 → 3.3 SiO2 + NA2SO4 + H2OPhysico Chemical Characteristics of Precipitated Silica BET Surface area : Brunauer, Emmett and Teller developed the process of calculating the surface area of precipitated silica. This method of calculating the surface area is popularly known as BET surface area. PH value : The pH value of precipitated silica is generally in neutral range. It is determined electrometrically with a glass electrode and pH meter. Drying loss : There is very small amount of physically bonded water content in precipitated silica. The major part of this water content is removed by drying in drying cabinet at 105oC for 2 hours. Ignition Loss : Precipitated silica contains chemically bonded water in the form silanol groups is also removed after 2 hours of ignition time at 1000oC. The ignition loss is determined with the substance that has previously been dried for 2 hours at 105ËšC. SiO2 content : Silicon dioxide content is determined gravimetrically by fuming off with hydrofluoric acid. The sulphate and chloride contents are determined by potentiometric titration. SIEVE residue. : SIEVE residue is determined by using Mocker apparatus. In this process the silica suspension is washed through the sieve with 4 bar water pressure. 45 micron sieves (325 mesh) is used for this process. The sieve is then dried and sieves residue is weighed. Tamped density. : The tamped density is calculated from the initial weight of the sample and the resulting volume, reported in g/l. It is used for the purpose of calculating weight of product in powder form. DBP absorption : The DBP absorption is a numerical value used to indicate absorptive capacity of filler. Owing to the automatic measurement process, however, this method can be carried out more accurately than the determination of the oil absorption. The DBP absorption capacity is influenced by other parameters, such as the particle size. Rubber Grade Precipitated Silica :PPTS - 200 gives high dispensability, makes it better reinforcing silica and suitable for filling a natural, synthetic and latex rubber, transparent shoesoles, tyres, tubes, rubber lining, vulcanization of rubber etc. to provide toughness and high resistance to abrasion.   Non Rubber Grade : Pesticide Grade : PPTS - 100 is most suitable for pesticides, insecticides & fungicides due to their extremely fine particles size and large surface area which account their use as an absorbent carrier and flow conditioner of solids and viscosity control of liquids. It has higher absorption, easier wetting, better compatibility with most toxicants and better chemical stability even after extended storage under tropical condition. Paint Grade : PPTS - 300 suitable for delustering or flattening effects in paints, prevents settling of pigment in storage, stabilizer emulsion and helps to covers greater surface area. Toothpaste Grade : PPTS - 400 suitable in the manufacturing of tooth powder & tooth paste. PPTS - 400 Silica when added to tooth powder or tooth paste acts as a good abrasive agent, thereby cleaning teeth thoroughly. The transparency of high porous and high surface area of Supersil-220 Silica permits the development of transparent tooth paste. Micronized Silica : PPTS - 500 is a superfine micronized Silica grade having all particles below 10 micron.

We provide Perlite Filter Aids under the name of clearflow as trademark. Experience in a variety of applications in many industries has shown that users of Perlite Filter Aids can substantially reduce filtration costs without sacrificing performance by converting to perlite filter aids. We are an eminent Perlite Filter Aids Supplier in India.   Perlite Filter Aid MaterialWhat is Perlite?Perlite in the natural state is a dense glassy rock formed by volcanic action. When crushed and treated under proper conditions, it pops like popcorn, expanding to 20 or more times its Original volume. A special milling and classification process gives the Perlite filter aids the structure and correct particle size range distribution needed for optimum performance.Perlite Filter AidPerlite Filler material and filter Aid is produced by meticulous Ore classifications. Several grades are obtained by milling the expanded Perlite and classify it using cy clone separation system. Expanded Perlite exhibit a unique jagged interlocking g structure with myriad of microscopic channels to enable Optimum flow rate and clarity for varied applications.For the past two decades, the use of Perlite as filter aid has taken over Diatomite in terms of efficiency and economy. It is known t hat the trend will fort escalate in the near future as Perlite - relate d product s continues to gain markets all over the world.Note : Perlite Filter aids are Produce d in a full range of grades to economically meet the flow rate and clarity requirements of almost e very industry.Advantages: Light Cake Density : Perlite filter Aid gives a density advantage of 20% to 50% over other filter aid. The cake density of the Perlite filter aid is in the range of 120 to 250 kg/m3. Economical : Filter aid is usually purchased by Weight. Therefore, Perlite filter aids offer more volume per ton purchased than any other filter Aid, and that will reduce the total cost, especially on Rotary Vacuum per-coat Filters. Easy Cake Release : At the end of the cycle on Pressure filters, Perlite filter aids drop off filter cake or leaves easily and facilitate cleaning the filter. Perlite is Sterile and inert material : Perlite is an amorphous mineral consisting of fused Sodium Potassium Aluminum Silicate. Perlite filter aids are processed at a temperature exceeding 800C0 (15000F) which eliminates Organic matter. They have extremely low solubility's in mineral and organic acids at both low and high temperatures. Solubility in strong alkalis will vary according to temperature and time of contact. Full Range of Grades : Perlite Filter aids is available in a full range of grades for industrial applications for fast flow rates to Maximum clarity. Safe in Handling : Perlite filter aids do not pose a health hazard. Applications of Perlite Filter Aid:Food Processing Corn Syrup Filtration Edible Oils Sugar Syrup Filtration (Either Beat or Can Sugar). Fruit Juices Vegetable Palm Oils. Citric Acid. Soft Drinks. Water Cider Sugar Wine Vegetable Juices   Pharmaceutical Enzymes Epson Salts Penicillin Streptomycin   Industrial Water Treatment Oil Recovery Recovery of fine solids   Chemicals Industries Polymers, Resins. Fertilizer. Waste Disposal. W at er purifier & Treatment:- Waste water Drinking water Mineral water Swimming Pools & Recycling   Paints/ Coatings/Textiles Waxes Oils Varnish Gums Shellac Coating Paint Filler Material

The range of products which we offer to the customers is inclusive of a high quality of Bleaching Earth Powder. Our Bleaching Earth Powder is used in the edible oil refining companies and is used for the refining of vegetable oil. Our Bleaching Earth Powder is also used for decolorizing the vegetable mineral oil, animal mineral oil and wax. Our Bleaching Earth Powder has been priced at very affordable rates by us.

Our Activated Carbon Powder can be further modified in granules form & cylindrical pellets form. This Activated Carbon Powder is extensively used for the removal of taste, odor, and chlorine and dissolved organic contaminants from potable and process water. Owing to the high quality standards, our Activated Carbon Powder is extensively used in sugar mills, paper mills, rice mills, and food processing units.