A graphene nano-steam generator and a beauty instrument are provided. The graphene nano-steam generator includes a coarse steam channel, a nano-steam channel and a high-voltage power supply device. The coarse steam channel is connected to a coarse steam manufacturing device and the nano-steam channel. The coarse steam channel is provided with a steam sieving device, and an end of the coarse steam channel is provided with a first electrode and a second electrode. The high-voltage power supply device is coupled to the first electrode and the second electrode. The high-voltage power supply device supplies high-voltage electricity to the first electrode and the second electrode, and forms a high-voltage arc discharge between the first electrode and the second electrode, thus the coarse steam molecular group flowing through is ionized by the high-voltage arc to generate a large amount of active nano-scale steam to be flowed out from the nano-steam channel.

A cementitious blend composition and a concrete mix composition preferable for making concrete resistant to high temperatures and alkaline conditions, particularly for making durable concrete for constructing an alumina digester tank in an aluminum smelter. The cementitious blend composition includes at least one hydraulic cement, silica fume (SF), and natural pozzolan (NP), wherein a weight percent ratio of at least one hydraulic cement:SF:NP in the cementitious blend composition lies in the range of (24-63):(5-44):(32-40) with the sum of the weight percentages of the at least one hydraulic cement, the SF, and the NP not exceeding 100%. The concrete mix composition comprises water and the cementitious blend composition, wherein a weight ratio of the water to the cementitious blend composition is 0.2-0.5, and wherein the concrete mix composition has a content of the cementitious blend composition of 400-550 kg/m.sup.3.

A cementitious blend composition and a concrete mix composition preferable for making concrete resistant to high temperatures and alkaline conditions, particularly for making durable concrete for constructing an alumina digester tank in an aluminum smelter. The cementitious blend composition includes at least one hydraulic cement, silica fume (SF), and natural pozzolan (NP), wherein a weight percent ratio of at least one hydraulic cement: SF:NP in the cementitious blend composition lies in the range of (24-63): (5-44): (32-40) with the sum of the weight percentages of the at least one hydraulic cement, the SF, and the NP not exceeding 100%. The concrete mix composition comprises water and the cementitious blend composition, wherein a weight ratio of the water the cementitious blend composition is 0.2-0.5, and wherein the concrete mix composition has a content of the cementitious blend composition of 400-550 kg/m.sup.3.

A cementitious blend composition and a concrete mix composition preferable for making concrete resistant to high temperatures and alkaline conditions, particularly for making durable concrete for constructing an alumina digester tank in an aluminum smelter. The cementitious blend composition includes at least one hydraulic cement, silica fume (SF), and natural pozzolan (NP), wherein a weight percent ratio of at least one hydraulic cement:SF:NP in the cementitious blend composition lies in the range of (24-63):(5-44):(32-40) with the sum of the weight percentages of the at least one hydraulic cement, the SF, and the NP not exceeding 100%. The concrete mix composition comprises water and the cementitious blend composition, wherein a weight ratio of the water to the cementitious blend composition is 0.2-0.5, and wherein the concrete mix composition has a content of the cementitious blend composition of 400-550 kg/m.sup.3.

In a process as disclosed according to the present invention, gases or gas mixtures used to form a reactant mixture in an at least temporarily ignitable composition are fed into a mixing chamber (11) through the passages (131) in a boundary wall (13) of the mixing chamber (11) and by means of one or more feed conduits (14) which have feed orifices (141) and extend into the mixing chamber (11), respectively. The present invention likewise provides a corresponding reactor (1).

A process for forming and for catalytically converting an ignitable gas mixture is proposed, in which at least a first gas or gas mixture comprising oxygen and a second gas or gas mixture comprising one or more oxidizable compounds are mixed to give the ignitable gas mixture, where the ignitable gas mixture is supplied to a reaction zone (12) of a reactor (1). The first gas or gas mixture and the second gas or gas mixture are fed into a mixing chamber (11) having a boundary wall (13) provided with a number of passages (131), where the first gas or gas mixture is fed into the mixing chamber (11) through the passages (131) in the boundary wall (13) and where the second gas or gas mixture is fed into the mixing chamber (11) by means of one or more feed conduits (14) which have feed orifices (141) and extend into the mixing chamber (11). The present invention likewise provides a corresponding reactor (1).

A honeycomb metal anchoring structure, as described herein, is formed from a plurality of strips assembled in pairs so as to define a plurality of cells. Each strip is divided along its length into a plurality of portions, including at least one series of planar assembly portions juxtaposed and assembled with a series of assembly portions of an adjacent strip by fastening means, each strip having a lower longitudinal edge intended to be applied against a wall to be protected and an upper longitudinal edge opposite the lower longitudinal edge. The anchoring structure additionally comprises a plurality of protective tabs connecting each pair of juxtaposed assembly portions each protective tab being attached to an assembly portion by a longitudinal join line and extending in the direction of the juxtaposed assembly portion, at least up thereto.

A graphene nano-steam generator and a beauty instrument are provided. The graphene nano-steam generator includes a coarse steam channel, a nano-steam channel and a high-voltage power supply device. The coarse steam channel is connected to a coarse steam manufacturing device and the nano-steam channel. The coarse steam channel is provided with a steam sieving device, and an end of the coarse steam channel is provided with a first electrode and a second electrode. The high-voltage power supply device is coupled to the first electrode and the second electrode. The high-voltage power supply device supplies high-voltage electricity to the first electrode and the second electrode, and forms a high-voltage arc discharge between the first electrode and the second electrode, thus the coarse steam molecular group flowing through is ionized by the high-voltage arc to generate a large amount of active nano-scale steam to be flowed out from the nano-steam channel.

The invention relates to a honeycomb metal anchoring structure (10), formed from a plurality of strips (12) assembled in pairs so as to define a plurality of cells (14). Each strip (12) is divided along its length into a plurality of portions, including at least one series of planar assembly portions (121, 122) juxtaposed and assembled with a series of assembly portions of an adjacent strip by fastening means, each strip (12) having a lower longitudinal edge intended to be applied against a wall to be protected and an upper longitudinal edge opposite the lower longitudinal edge. The anchoring structure additionally comprises a plurality of protective tabs (16) connecting each pair of juxtaposed assembly portions (121, 122), each protective tab (16) being attached to an assembly portion (122) by a longitudinal join line (18) and extending in the direction of the juxtaposed assembly portion (121), at least up thereto.

A cementitious blend composition and a concrete mix composition preferable for making concrete resistant to high temperatures and alkaline conditions, particularly for making durable concrete for constructing an alumina digester tank in an aluminum smelter. The cementitious blend composition includes at least one hydraulic cement, silica fume (SF), and natural pozzolan (NP), wherein a weight percent ratio of at least one hydraulic cement:SF:NP in the cementitious blend composition lies in the range of (24-63):(5-44):(32-40) with the sum of the weight percentages of the at least one hydraulic cement, the SF, and the NP not exceeding 100%. The concrete mix composition comprises water and the cementitious blend composition, wherein a weight ratio of the water to the cementitious blend composition is 0.2-0.5, and wherein the concrete mix composition has a content of the cementitious blend composition of 400-550 kg/m.sup.3.