Hong Cheng mill provides high quality inorganic flame retardant powder for filler industry

    In order to prevent fire disaster from occurring, or to prevent or slow the progression of fire, treatment has been done to flammable materials to change them into flammable retardant material or non-combustible material, or only charring with flame, no smoke; or burning is difficult to extend even charring , fire, or smoke.

    Flame retardants developed in terms with the rise of the polymer material in the late 1950s; Filler is actually the biggest additives in the poly material industry, widely used in plastic industry, rubber industry, and paint industry. It can not only reduce costs, but also improve the mechanical properties of products, processing and other performance.

    With the improvement of safety awareness, people put forward higher requirements for flame retardant; flame retardant in accordance with the general criteria of the chemical composition can be divided into organic and inorganic flame retardants two categories.

    Inorganic flame retardants include magnesium hydroxide, aluminum hydroxide, zinc borate, ammonium polyphosphate, and red phosphorus, silicon-based inorganic flame retardant and other types of expandable graphite, in addition, many non-metallic minerals can be widely used as a flame retardant after crushing and pulverizing, it has a very wide range of applications in this field.

    1. Brucite: brucite is a natural mineral, the main component of Mg(OH)2, is the highest amount of magnesium mineral in nature. Brucite has a layered structure, generally exist in massive and fibrous forms. Since Mg(OH)2 is a new material which with the LSZH rapid development in recent years, mainly used in the field of polymer as an environmentally friendly flame retardant;

    2. Palygorskite: palygorskite (attapulgite) known as the "king of the earth," the title of "the universal earth", is an important natural nano-fibrous silicate clay, a typical nano grade needle powder, polymeric material having a condition as reinforcing filler;

    3. Water magnesite: Trona is a type of magnesium carbonate, magnesium content of the ore is high and with quality white, low impurity content, is a high-quality magnesium-containing non-metallic mineral materials, used to make high-quality magnesia, It can also be used as a flame retardant polymer materials.

    4. Water Talc: is the layered double hydroxide, have the effect of flame retardant and smoke suppression.

    5. Montmorillonite: also known as plastic kaolinite, micro crystal kaolinite, is natural silicate mineral clay and is bentonite ore’s main component. There are synergies with other flame retardants;

    6. Diatomaceous earth: with huge reserves, it cannot be directly use because of its impurities, the natural diatomite need to be crushing, sorting for removal of impurities, and then under high-temperature calcination to remove organic impurities, and carbonate decomposition, the ultimate product is purity can be used as a flame retardant.

    Grinding mill plays an significant role in the production line of non-metallic mineral, can grinding powder into different specifications according to user’s needs. For example the Raymond mill, the fineness of grinding can be finished into 80-600 mesh; super fine mill, the fineness of grinding can be finished into 400-2500 mesh, and can be adjusted in this range, therefore, the selectivity interval is relatively large, is the best choice for non-metallic mineral processing.