21results about "Ceramic production plants" patented technology

The invention relates to a method for producing cement clinker by processing accumulated carbon dioxide in order to form methanol, having the steps of pre-heating a raw meal made of silicate-containing and lime-containing rock in a pre-heater, calcinating the raw meal in a calciner (120), sintering the calcinated raw meal in a rotary furnace (130), the exhaust gas of the rotary furnace (130) reaching the calciner (120) and flowing on from there into the pre-heater, and cooling the sintered cement clinker in a clinker cooler (140), wherein a first portion of the cooling air from the clinker cooler (140), in the form of primary air, flows in a rotary furnace burner (135) in order to heat the rotary furnace (130), a second portion of the cooling air from the clinker cooler (140), in the form of tertiary air, flows to the calciner (120) via a tertiary air line (150), and a third portion of the cooling air is ejected from the clinker cooler (140) as exhaust air or is used to dry electrolysis sludge. The exhaust gas from the pre-heater flows completely or partly and directly or indirectly into a reactor (220) in order to produce methanol (CH3OH) from the carbon dioxide (CO2) and carbon monoxide (CO) contained in the exhaust gas in that the exhaust gas is reacted with hydrogen (H2) in the reactor (220). According to the invention, a high-temperature electrolysis cell (210) is heated with heat from the aforementioned method in order to generate hydrogen (H2) from a pre-heated electrolyte so that the electrolyte is heated to a temperature between 100°C und 850°C.

The invention relates to a method for producing material containing hydrated cement, wherein the material is crushed in a first crushing device (2) and then supplied to a reactor (3) in which the material is mixed with an aqueous liquid and CO2 and in which a mixing movement of the material is generated, wherein the material removed from the reactor (3) is split into at least two fractions by means of a grading device (20). Furthermore, the temperature and the pressure in the reactor (3) are influenced such that an overpresssure in comparison with the atmospheric pressure and a temperature higher than 100°C are adjusted.

Methods of making a hydraulic cement are provided. Aspects of the methods include employing precipitated calcium carbonate (PCC), such as a CO2 sequestering PCC, as a feedstock for lime (CaO) production. Also provided are hydraulic cements and concretes produced by methods of embodiments of the invention, as well as products produced therefrom. In addition, systems for practicing methods of embodiments of the invention are provided.

This invention relates to an integrated system for cement production processes, comprising a solid oxide electrolytic cell, a first waste heat recovery and vaporizer, and a second waste heat recovery and vaporizer. The first waste heat recovery and vaporizer receives water and a first gas generated in the cement production process at a first temperature, generating a first steam stream, which is then fed into the second waste heat recovery and vaporizer. The second waste heat recovery and vaporizer receives water and a second gas generated in the cement production process at a second temperature higher than the first temperature, generating a second steam stream, which is mixed to generate a third steam stream, which is then fed into the electrolytic cell. The electrolytic cell generates hydrogen and oxygen through an electrolytic reaction. The hydrogen and oxygen generated by the electrolytic reaction serve as green fuel and combustion aid in the cement production process. This system utilizes the high-temperature waste heat from the cement production process to heat the solid oxide electrolytic cell, improving the energy efficiency of the electrolytic cell and further enhancing the energy-saving and carbon-reducing effects in the cement production process.

A system and method for preparing sulphoaluminate cement from solar energy stored heat dried sludge. Solar concentrator connected to high-temperature molten salt storage tank, superheater, preheating-evaporator and low-temperature molten salt storage tank to form mixed molten salt heat transfer-heat storage circulation system; superheated steam in superheater enters ultra-disc dryer, and ultra-disc dryer connected to water storage tank and preheating-evaporator superheater to form water heat transfer circulation system; wet sludge bin connected to ultra-disc dryer and inlet of dried sludge bin, and dried sludge conveyed to dried sludge bin for storage; and cement production system separately connected with waste gas outlet of ultra-disc dryer and outlet of dried sludge bin. System can use valley electricity to supplement heat at any specific time, and coupled with cement kiln; waste gas introduced into cement kiln for waste burning; dried sludge mixed with other solid waste to enter cement kiln to prepare sulphoaluminate cement.

A method of producing cement clinker and a second calcined material, wherein the cement clinker is produced in a first production line and the second calcined material is produced from a raw material in a second production line by carrying out the following procedures e) optionally drying the raw material in a dryer, g) calcining the optionally dried raw material in a rotary kiln to obtain the second calcined material, wherein the sensible heat of a hot gas in the first production line is used as a heat source in the calcining step g) for calcining the raw material, and wherein the rotary kiln exhaust gas coming from the calcining step g) is introduced into the first production line for the secondary combustion of the rotary kiln exhaust gas.

System and method for producing a plurality of brine streams for use in producing concrete, comprising a selected brine stream production system configured to produce a monovalent and a polyvalent bri

A hydrocarbon feed stream is exposed to heat in the absence of oxygen, converting the hydrocarbon feed stream into a solids stream and a gas stream. The gas stream is separated into an exhaust gas stream and hydrogen. Carbon is separated from the solids stream as a carbon stream. A water stream is subjected to electrolysis to produce an oxygen stream and hydrogen. The oxygen and a portion of the carbon are combined to generate electricity and a carbon dioxide stream. At least a portion of the carbon stream, cement, and water are mixed to form a concrete mix. The concrete mix can be used to produce ready-mix and precast concrete. The carbon dioxide used to cure the concrete can be sourced from a carbon dioxide stream produced by generating electricity.

The joined body has a metal member, an insulating member, and a joining material that joins the metal member and the insulating member, and when the portion of the surface of the metal member in contact with the joining material is defined as a joining portion, the average crystal grain size of the surface layer of the metal member in the joining portion is smaller than the average crystal grain size of the interior of the metal member. The joined body is used in an airtight terminal or the like.

A joined body includes: a metal member; an insulating member; and a joining material that joins the metal member and the insulating member, in which when a site in contact with the joining material on a surface of the metal member is defined as a joining portion, an average crystal grain size of a surface layer of the metal member in the joining portion is smaller than an average crystal grain size of an inner portion of the metal member. The joined body is used for a hermetic terminal or the like.

A concrete mixture comprising: a first composition comprising about 34-52 wt.% sand, about 17-26 wt.% Portland cement, about 10-17 wt.% calcined clay, about 5-9 wt.% limestone powder, about 10-20 wt%

The invention relates to lime and cement production processes using a gaseous CO2 stream as heat transfer fluid. The processes incorporate a heat supply section, a calcination section and a power cycle section, in the heat supply section, an external heat supply is furnished to produce a first heated CO2 stream, which is fed into a reactor in the calcination section, the first heated CO2 stream serves as the principal heat carrier, driving a calcination reaction of limestone to form a heated lime product and releasing a heated CO2 stream from limestone, a combined first CO2 stream, second CO2 stream and heated CO2 stream from limestone are used to drive a power cycle in the power cycle section for power generation. A near zero emission can be achieved at a lower energy and cost penalty than a post-combustion CO2 capture and sequestration applied to conventional lime and cement production processes.

A forming area for automated composite processing and methods of maintaining workability of a ceramic matrix composite material in a forming area are presented. It is determined if a humidity within the forming area is in a desired range. In response to a determination that the humidity is not in the desired range, at least one of a heater or a humidifier is activated by an environmental controller to maintain a desired humidity for forming the ceramic matrix composite material within the forming area.

A method of fabricating a concrete slab on ground system includes depositing wet geopolymer cement concrete on a ground substrate to generate a first slab. Wet Portland cement concrete is then deposited on the first slab to generate a second slab.

Disclosed herein is an indirectly heated reactor comprising: a reactor tube that in use is configured to be vertically oriented; an outer shell surrounding the reactor tube, the outer shell comprising heating elements that are configured to heat an interior of the outer shell; one or more gas input ports located towards an in-use upper end of the outer shell; a powder input located adjacent to an in-use top end of the reactor tube and configured to feed a powder such that the powder falls downwards in the reactor tube in use; and a reacted powder output positioned at an in-use base of the reactor tube. The outer shell is fluidly connected to the reactor tube by one or more gas feed ports that are arranged towards an in-use lower region of the reactor tube such that, in-use of the reactor, the gas injected in the outer shell is able to be heated by the heating elements to cause the gas to flow from the outer shell and into the reactor tube. Also disclosed herein are other embodiments of indirectly heated reactors and uses of the indirectly heated reactors.

A method of producing a synthetic carbonated mineral component in a cement manufacturing plant, includes crushing concrete demolition waste, introducing the crushed concrete demolition waste into a raw meal mill without any prior screening procedure, grinding and simultaneously carbonating the crushed concrete demolition waste in the raw meal mill by reacting the crushed concrete demolition waste with CO2 contained in a CO2 enriched exhaust gas, thereby obtaining the synthetic carbonated mineral component, and removing the synthetic carbonated mineral component from the raw meal mill.

Methods of making a hydraulic cement are provided. Aspects of the methods include employing precipitated calcium carbonate (PCC), such as a CO2 sequestering PCC, as a feedstock for lime (CaO) production. Also provided are hydraulic cements and concretes produced by methods of embodiments of the invention, as well as products produced therefrom. In addition, systems for practicing methods of embodiments of the invention are provided.

A system for producing carbon neutral cement comprising: a carbon neutral energy source; a limekiln comprising a vessel for containing limestone, an inlet for the introduction of limestone into the ve

Each of the one or more ceramic raw materials charged in the container, the ballstone, and the solvent are mixed by a rotation and revolution mixer. Alternatively, the computer operates a manufacturing system including a plurality of devices including the autoroatation and revolution mixer or other devices, and a robot system including one or more robots for at least one of the plurality of devices, in accordance with manufacturing method recipe data indicating a ceramic manufacturing method recipe. As a result, one or more steps among a plurality of steps for blending the ceramic raw material are automatically performed.

System and method for producing a plurality of brine streams for use in producing concrete, comprising a selected brine stream production system configured to produce a monovalent and a polyvalent bri

The invention relates to a method for producing cement clinker and processing associated carbon dioxide into methanol, comprising the following steps: preheating a raw material consisting of silicate-containing and lime-containing rocks in a preheater; calcining the raw material in a calcining furnace (120); sintering the calcined raw material in a rotary kiln (130) wherein the exhaust gas of the rotary kiln (130) reaches the calcining furnace (120) and further flows there into a preheater; the sintered cement clinker is cooled in a clinker cooler (140), in which a first portion of the cooling air from the clinker cooler (140) flows as primary air into a rotary kiln burner (135) for heating the rotary kiln (130), and in which a second portion of the cooling air from the clinker cooler (140) flows as secondary air into the rotary kiln burner (135) for heating the rotary kiln (130). A second portion of the cooling air from the clinker cooler (140) flows as tertiary air via a tertiary air duct (150) to the calcining furnace (120), and wherein a third portion of the cooling air from the clinker cooler (140) is discharged as exhaust gas or used to dry the electrolytic sludge, the exhaust gas from the preheater flows entirely or partially and directly or indirectly into the reactor (220) for the production of methanol (CH3OH) from carbon dioxide (CO2) and carbon monoxide (CO) contained in the exhaust gas in such a way that it reacts with hydrogen (H2) in the reactor (220). According to the invention, the high-temperature electrolysis cell (210) is heated with heat from the above method in order to generate hydrogen (H2) from the preheated electrolyte, such that the electrolyte is heated to a temperature between 100 DEG C and 850 DEG C.