A radon-free ceramic panel includes a mixture including two or more types of stone dust selected from among granite, basalt, limestone, dolomite, elvan, black stone, feldspar, and sandstone, along with waste slag and a non-phenolic adhesive. The ceramic panel is lightweight and has excellent fire resistance, heat insulation, corrosion resistance, water resistance, and ability to act as a bather to radon gas.

Insulating ceramic panels and methods of forming insulating ceramic panels are disclosed herein. The insulating ceramic panels include a plurality of hollow particles and an oxide binder. The plurality of hollow particles are formed from a hollow particle material that includes a metal oxide. The plurality of hollow particles defines an average equivalent particle diameter of at least 10 micrometers (μm) and at most 500 μm. In addition, the plurality of hollow particles defines an average wall thickness that is at least 3% and at most 30% of the average equivalent particle diameter. The oxide binder material attaches each hollow particle to at least one other hollow particle and differs from the hollow particle material. The insulating ceramic panels define a particle-enclosed void volume fraction, which is enclosed within the plurality of hollow particles, and an interstitial void volume fraction, which is defined within an interstitial space among the plurality of hollow particles.

The invention involves a silky, fine-grained matte ceramic tile and its preparation method. A blank material for the ceramic tile consists of the following components: nepheline powder: 10%-15%; high-carbon mud: 10%-15%; low-carbon mud: 15%-22%; medium-high-carbon mud: 10%-15%; recycled waste blank: 5%-10%; feldspar powder: 5%-10%; albite powder for paving: 12%-20%; waste porcelain powder: 5%-10%; desulfurized waste: 0%-7%; waste from edging and polishing: 15%-26%; liquid gel remover: 0.3%-1.0%; liquid reinforcing agent: 0.2%-0.8%. Its preparation method comprises the following steps: preparing raw materials for a blank body and ball milling.fwdarw.spray drying.fwdarw.aging.fwdarw.pressing and molding of the blank body.fwdarw.drying.fwdarw.polishing the blank body.fwdarw.spraying water.fwdarw.applying a glaze.fwdarw.applying a decorative pattern.fwdarw.firing.

A radon-free ceramic panel includes a mixture including two or more types of stone dust selected from among granite, basalt, limestone, dolomite, elvan, black stone, feldspar, and sandstone, along with waste slag and a non-phenolic adhesive. The ceramic panel is lightweight and has excellent fire resistance, heat insulation, corrosion resistance, water resistance, and ability to act as a bather to radon gas.