Diatomite

Diatomite is a biological siliceous sedimentary rock formed by the deposition of siliceous remains of diatoms and other microorganisms.

Pure Diatomite is generally white in color, composed of opal and its variants. It is often contaminated with iron containing oxides or organic matter, resulting in gray white, light yellow, gray to black. The streaks are white, earthy luster, without cleavage, lightweight, porous, and easily broken into earthy shapes. However, the hardness of diatom particles can reach 4.5-5, and the density varies depending on the impurity content. They have strong adsorption ability, low thermal conductivity, and good chemical stability. According to the different impurities such as clay in the ore, Diatomite earth can be divided into types such as Diatomite earth, clay containing Diatomite earth, clayey Diatomite earth, and Diatomite clay.

Diatomite earth can be used to produce filter aids, adsorbents, catalyst carriers, functional fillers, abrasives, water treatment agents, asphalt modifiers (fillers), etc. It is widely used in light industry, food, chemical industry, building materials, petroleum, medicine, high-grade highway construction and other fields.

Pesticide industry: wettable powders, dry land herbicides, paddy field herbicides, and various biopesticides. The fineness ranges from 325 to 500 mesh, with good mixing uniformity. When used, it will not clog agricultural machinery pipelines. It can moisturize the soil, loosen the soil, prolong the efficacy and fertilization time, and promote crop growth.

Compound fertilizer industry: Compound fertilizer for various crops such as fruits, vegetables, flowers and plants. Diatomite earth has strong adsorption performance, light bulk density, uniform fineness, neutral and non-toxic pH value, and good mixing uniformity. Diatomite earth can become an efficient fertilizer, promoting crop growth and soil improvement.

Rubber industry: fillers used in various rubber products such as vehicle tires, rubber pipes, V-belts, rubber rolling belts, conveyor belts, and car foot mats. Diatomite earth can significantly enhance the rigidity and strength of the product, with the sedimentation volume up to 95%, and can improve the performance of the product in terms of heat resistance, wear resistance, heat preservation, aging resistance and other chemical actions.

Building insulation industry: roof insulation layer, insulation bricks, calcium silicate insulation materials, porous coal cake furnace, sound insulation and fireproof decorative panels, wall sound insulation and decorative panels, floor tiles, ceramic products, etc; Diatomite earth should be used as an additive in cement. Adding 5% Diatomite earth to the production of cement can improve the strength ZMP and activate SiO2 in cement, which can be used as emergency cement.

Plastic industry: household plastic products, construction plastic products, agricultural plastic, window and door plastic, various plastic pipes, and other light and heavy industrial plastic products. Diatomite earth has excellent extensibility, high impact strength, tensile strength, tear strength, light and soft texture, good internal abrasion resistance, and good compressive strength.

Leather and artificial leather industry: various types of leather such as artificial leather products. Diatomite earth is a high-quality filler with strong sun protection, soft and light physical properties, and can eliminate leather pollution in balloon products. It has a light capacity, neutral pH value, is non-toxic, and has a light, soft and smooth powder with good strength performance. It also has sun protection and high temperature resistance. Diatomite earth is used as a high-quality filler in mosquito coils. Diatomite earth can adsorb drugs and improve the effectiveness of mosquito killing. With the improvement of people's living standards and the enhancement of health awareness, it is necessary to use non-toxic and smokeless mosquito repellent incense. Diatomite earth can help with combustion, is smokeless, non-toxic, and is highly welcomed by users.

Feed industry: Additives for various feed sources such as pigs, chickens, ducks, geese, fish, birds, and aquatic products. Diatomite earth mineral powder has a unique pore structure, light and soft weight, large porosity, strong adsorption performance, and forms a light and soft color. It can be evenly dispersed in the feed and mixed with feed particles, making it difficult to separate and precipitate. After being consumed by livestock and poultry, it promotes digestion and can adsorb bacteria from the gastrointestinal tract of livestock and poultry before being discharged, enhancing physical fitness and playing a role in strengthening tendons and bones. Aquatic products placed in fish ponds improve water quality and good breathability, Improve the survival rate of aquatic products.

Paper industry: various types of paper such as office paper and industrial paper; Diatomite earth has a light and soft texture, with a fineness range of 120 to 1200 mesh. The addition of Diatomite earth can make the paper smooth, lightweight, strong, and reduce the expansion and contraction caused by humidity changes. In cigarette paper, the combustion rate can be adjusted without any toxic side effects. In filter paper, it can improve the clarity of the filtrate and accelerate the filtration rate.

Polishing and friction industry: Diatomite has strong lubricating properties and can be used for polishing brake pads in vehicles, mechanical steel plates, wood furniture, glass, etc.

Industry: Commonly used in industry as insulation materials, filtering materials, fillers, grinding materials, water glass raw materials, decolorizing agents, Diatomite earth filter aids, catalyst carriers, etc. The main component of Diatomite earth as a carrier is SiO2. For example, the active component of industrial vanadium catalyst is V2O5, the co catalyst is alkali metal sulfate, and the carrier is refined Diatomite earth. Experiments have shown that SiO2 has a stabilizing effect on the active components, and it strengthens with the increase of K2O or Na2O content. The activity of the catalyst is also related to the dispersion and pore structure of the carrier. After acid treatment of Diatomite earth, the content of oxide impurities decreases, the content of SiO2 increases, and the specific surface area and pore volume also increase. Therefore, the carrier effect of refined Diatomite earth is better than that of natural Diatomite earth.

Paint and coating industry: various paint and coating fillers such as furniture, office paint, building paint, machinery, household appliance paint, oil printing ink, asphalt, automotive paint, etc; Diatomite earth has a neutral pH value, is non-toxic, and has a fineness of 120 to 1200 mesh. It has a light and soft texture and is a high-quality filler in paints.

Technology application

Wastewater treatment

Diatomite earth treatment of urban sewage is a physicochemical sewage treatment technology, and efficient modified Diatomite earth sewage treatment agent is the key to this technology. Based on this, combined with the process flow and facilities, this technology can achieve the goal of treating urban sewage efficiently, stably, and inexpensively. However, as this is a new technology, there are still some problems to be solved in both theoretical and practical engineering applications.

Additive

Adding Diatomite earth to coatings for extinction and odor adsorption has been applied abroad for many years, and domestic enterprises gradually realize the excellent performance of Diatomite earth applied to coatings and Diatomite mud

The indoor and outdoor coatings, decoration materials, and Diatomite earth produced with Diatomite earth not only do not emit harmful chemicals to the human body, but also have the effect of improving the living environment.

Main features

High performance cost ratio:After adding Diatomite earth to the Diatomite earth coating, it has the characteristics of high porosity, strong absorption, stable chemical properties, wear resistance, heat resistance, etc. It can provide excellent surface performance, compatibilization, thickening, and improve adhesion for the coating. Due to its large pore volume, it can shorten the drying time of the coating. It can also reduce the amount of resin used and lower costs

Toxic-free:The main component of Diatomite earth is silicate, with a neutral pH value and no toxicity. There are countless fine pores on the surface, which can adsorb and decompose odors in the air, and have functions of humidity regulation and deodorization. Building materials produced using Diatomite earth as raw material not only have the characteristics of non combustion, dehumidification, deodorization, and good permeability, but also can purify air, sound insulation, waterproofing, and heat insulation.

Adjust humidity:Diatomite earth indoor and outdoor coatings and decoration materials can absorb and decompose substances that cause allergies, and have medical functions. The absorption and release of water by Diatomite earth wall materials can produce a waterfall effect, breaking down water molecules into positive and negative ions. Positive and negative ion groups float around in the air and have the ability to kill bacteria.

Diatomite earth is composed of amorphous SiO2 and contains small amounts of Fe2O3, CaO, MgO, Al2O3, and organic impurities. The chemical composition of Diatomite earth is mainly SiO2, containing small amounts of Al2O3, Fe2O3, CaO, MgO, and organic matter.