供应熔融石英砂

熔融石英

熔融石英是以优质的东海石英为原料，经挑选、粗破碎、磁选除铁、酸洗、烘干粗细磨、整形分筛等一系列工艺加工而成。由于经1700C-2500C高温烧制后转化而成的熔融型或无定形石英，石英晶体结构产生改变，使熔融石英比天然结晶型石英纯度更高、比重和热膨胀系数较低，外观为无色透明，有少部分乳白雾状气泡，可按用户要求粒度加工。

Fused quartz and fused silica are types of glass containing primarily silica in amorphous (non-crystalline) form. They are manufactured using several different processes. Note that glasses formed by the traditional melt-quench methods (heating the material to melting temperatures, then rapidly cooling to the solid glass phase), are often referred to as vitreous, as in vitreous silica. The term vitreous is synonymous with glass, when used in the melt-quench context.

Fused quartz is manufactured by melting naturally occurring quartz crystals of high purity at approximately2000°C, using either an electrically heated furnace (electrically fused) or a gas/oxygen-fuelled furnace (flame fused). Fused quartz is normally transparent.

Fused quartz can also form naturally. The naturally occurring form is usually referred to as Metaquartzite and is formed under metamorphic conditions. An increase in heat causes the crystals within the quartz to become fused together.

Fused silica is produced using high purity silica sand as the feedstock, and is normally melted using an electric furnace, resulting in a material that is translucent or opaque. (This opacity is caused by very small air bubbles trapped within the material.)

Synthetic fused silica is made from a silicon-rich chemical precursor usually using a continuous flame hydrolysis process which involves chemical gasification of silicon, oxidation of this gas to silicon dioxide, and thermal fusion of the resulting dust (although there are alternative processes). This results in a transparent glass with an ultra-high purity and improved optical transmission in the deep ultraviolet. One common method involves adding silicon tetrachloride to a hydrogen-oxygen flame, however use of this precursor results in environmentally unfriendly by-products including chlorine and hydrochloric acid. To eliminate these by-products, new processes have been developed using an alternative feedstock, which has also resulted in a higher purity fused silica with further improved deep ultraviolet transmission.

Fumed silica is manufactured by a similar flame hydrolysis process to synthetic fused silica, however it is in the form of a fine powder/dust and is typically used in applications such as fillers for rubbers and plastics, coatings, adhesives, cements, sealants, cosmetics, pharmaceuticals, inks and abrasives.

The optical and thermal properties are superior to those of other types of glass due to its purity (or rather, its lack of impurities). For these reasons, it finds use in situations such as semiconductor fabrication and laboratory equipment. It has better ultraviolet transmission than most other glasses, and so is used to make lenses and other optics for the ultraviolet spectrum. Its low coefficient of thermal expansion also makes it a useful material for precision mirror substrates.

特性：几近零的热膨胀率、的热稳定性、纯度高（SiO2含量高，铁、钾、钠、钛等含量低）、化学性质稳定、专项使用机械控制生产、粒度分布稳定。

Properties： hardly coefficient of thermal expansion,excellent thermal stability、high purity、steady chemical property and distribution of(particle)size.

主要用途：环氧树脂浇注、电子密封料、铸造材料、耐火、陶瓷和玻璃行业原料、涂料、油漆行业原料等。

Main uses：epoxy resin pouring、electronic seal、foundry、ceramic，glasswork、paint etc.

熔融石英根据产品规格分为熔融石英块、熔融石英砂、熔融石英粉。

1、熔融石英块

Fused Quartz Lump

规格： 1-100mm

成份：SiO2:99.95%-99.99%;

Fe2O3:45 ppM max; Al2O3:50 ppM-100 ppM;

K2O:45 ppM max; Na2O:45 ppM max;

Li2O:2.0 ppM max; EC:1.8-2.2; PH:5.8

Spec： 1-100mm

Constituents：SiO2:99.95%-99.99%;

Fe2O3:45 ppM max; Al2O3:50 ppM-100 ppM;

K2O:45 ppM max; Na2O:45 ppM max;

Li2O:2.0 ppM max; EC:1.8-2.2; PH:5.8

2、熔融石英砂 Fused Silica Sand

规格：0.1-15mm

成份：SiO2:99.95%-99.99%min;

Fe2O3:50 ppM max; Al2O3:50 ppM-100 ppM;

K2O:50 ppM max; Na2O:50 ppM max;

Li2O:2.0 ppM max; EC:1.8-2.2 ; PH: 5.8

Spec：0.1-15mm

Constituents：SiO2:99.95%-99.99%min;

Fe2O3:50 ppM max; Al2O3:50 ppM-100 ppM;

K2O:50 ppM max; Na2O:50 ppM max;

Li2O:2.0 ppM max; EC:1.8-2.2 ; PH: 5.8

3、熔融石英粉Fused Quartz Powder

规格：100-325目，325目-500目，500目，800目，1250目，1500目

成份：SiO2:99.93%-99.95%min;

Fe2O3:60 ppM max; Al2O3:60 ppM-500 ppM;

K2O:60 ppM max; Na2O:60 ppM max;

Li2O:2.0 ppM max; EC:1.8-2.2 ; PH: 6

Spec(mesh)：100-325，325 -500，500，800，1250，1500

Constituents：SiO2:99.93%-99.95%min;

Fe2O3:60 ppM max; Al2O3:60 ppM-500 ppM;

K2O:60 ppM max; Na2O:60 ppM max;

Li2O:2.0 ppM max; EC:1.8-2.2 ; PH: 6