Paano ang pagkakaiba sa pagitan ng quartz sand at silica?

Silica can be exported, but the export of quartz sand is prohibited, so I want to know in detail, how does the customs distinguish it? Specific points, image points, such as composition, form, processing technology, etc.

Ang quartz sand ay isang uri ng quartz particle na ginawa sa pamamagitan ng pagdurog ng quartz stone. Ang quartz stone ay isang uri ng non-metallic mineral. Ito ay isang matigas, lumalaban sa pagsusuot at chemically stable na silicate na mineral. Ang pangunahing bahagi ng mineral nito ay SiO2, quartz sand Ang kulay ay gatas na puti, o walang kulay at translucent, na may Mohs na tigas na 7. Ang kuwarts na buhangin ay isang mahalagang pang-industriya na mineral na hilaw na materyal, hindi kemikal na mapanganib na mga kalakal, malawakang ginagamit sa salamin, paghahagis, ceramics at refractory materials, smelting ferrosilicon, metallurgical flux, Metalurgy, construction, chemicals, plastics, rubber, abrasives, filter materials at iba pang industriya.

Silica sand, also known as silica or quartz sand. It is based on quartz as the main mineral component, and the particle size is

The refractory particles of 0.020mm-3.350mm are classified into artificial silica sand, water-washed sand, scrubbing sand, and selected (flotation) sand according to different mining and processing methods. Silica sand is a hard, wear-resistant, chemically stable silicate mineral, and its main mineral component is SiO2

, Ang kulay ng silica sand ay milky white o walang kulay at translucent.

The main components of quartz sand and silica sand are sio2, which are distinguished according to the content of sio2. Those with sio2 content above 98.5% are called quartz sand, and those with sio2 content below 98.5% are called silica sand.

Ang buhangin ng kuwarts ay may mataas na katigasan, mga 7, at ang katigasan ng buhangin ng silica ay 0.5 na grado na mas mababa kaysa sa buhangin ng kuwarts. Ang kulay ng quartz sand ay mala-kristal, at ang kulay ng silica sand ay purong puti, ngunit hindi ito makintab at walang mala-kristal na pakiramdam.