The present invention relates to a method of preparing a geopolymer using a coal bottom ash. In the method, an alkali activating agent is used in a relatively smaller amount than in a conventional technology so that the mixture of the coal bottom ash and the alkali activating agent does not become a gel state, and a process for radiating a microwave is further provided after curing of a geopolymer specimen in an oven.

The invention relates to a method for producing a molded part from glass fiber and/or mineral fiber material with an inorganic binder. The inorganic binder is cured using electromagnetic radiation in order to form the molded part. The tool is designed to be at least partly permeable for the electromagnetic radiation for curing purposes, and the inorganic binder is a binder which can be cured by electromagnetic radiation. The invention further relates to a molded part which can be obtained in the aforementioned manner. Finally, the invention relates to a manufacturing unit for producing a molded part from glass fiber and/or mineral fiber material and an inorganic binder. The manufacturing unit comprises a device for providing a tool for forming the molded part, a device for introducing the glass fiber and/or mineral fiber material and the inorganic binder into the tool, a device for generating electromagnetic radiation to cure the inorganic binder in order to form a molded part, and optionally a device for removing the molded part from the tool.

The invention relates to a method for producing a molded part from glass fiber and/or mineral fiber material with an inorganic binder. The inorganic binder is cured using electromagnetic radiation in order to form the molded part. The tool is designed to be at least partly permeable for the electromagnetic radiation for curing purposes, and the inorganic binder is a binder which can be cured by electromagnetic radiation. The invention further relates to a molded part which can be obtained in the aforementioned manner. Finally, the invention relates to a manufacturing unit for producing a molded part from glass fiber and/or mineral fiber material and an inorganic binder. The manufacturing unit comprises a device for providing a tool for forming the molded part, a device for introducing the glass fiber and/or mineral fiber material and the inorganic binder into the tool, a device for generating electromagnetic radiation to cure the inorganic binder in order to form a molded part, and optionally a device for removing the molded part from the tool.

Material system suitable for a 3D printing method or 3D printing method material system comprising or consisting of a particulate material, a printing liquid, and an ester activator as well as 3D printing processes that use such a material system and molding parts produced by means of such material systems and 3D printing processes.

Material system suitable for a 3D printing method or 3D printing method material system comprising or consisting of a particulate material, a printing liquid, and an ester activator as well as 3D printing processes that use such a material system and molding parts produced by means of such material systems and 3D printing processes.

A device and a method for heating and curing artificial stone with microwave are provided. The device includes a microwave curing cavity, within which an incompletely cured artificial stone is placed, and microwave is used to heat the artificial stone to completely cure the artificial stone; wherein, a frequency of the microwave is in a range of 3001120 MHz. The present disclosure provides a separately designed microwave curing cavity, and utilizes 3001120 MHz microwave having a large penetrating depth, to realize a rapid curing of a large-sized artificial stone.

A device and a method for heating and curing artificial stone with microwave are provided. The device includes a microwave curing cavity, within which an incompletely cured artificial stone is placed, and microwave is used to heat the artificial stone to completely cure the artificial stone; wherein, a frequency of the microwave is in a range of 3001120 MHz. The present disclosure provides a separately designed microwave curing cavity, and utilizes 3001120 MHz microwave having a large penetrating depth, to realize a rapid curing of a large-sized artificial stone.

Systems and methods for forming a permanent plug in a subterranean formation include providing a solution of colloidal silica and pumping the colloidal silica into a bore of a subterranean well so that the colloidal silica penetrates pores of the subterranean formation. The colloidal silica within the pores of the subterranean formation is dehydrated to form a glass-like material within the pores of the subterranean formation.

Systems and methods for forming a permanent plug in a subterranean formation include providing a solution of colloidal silica and pumping the colloidal silica into a bore of a subterranean well so that the colloidal silica penetrates pores of the subterranean formation. The colloidal silica within the pores of the subterranean formation is dehydrated to form a glass-like material within the pores of the subterranean formation.

A gaseous emissions treatment component is made by extruding a green ceramic mix through a die to form an extrusion having a honeycomb substrate with elongate cells extending its length and with the cells bounded by walls dividing adjacent cells from one another. Molten metal for use in induction heating of the component is placed in selected cells and is solidified by cooling.