# US 12,759,933 B2 · Cement production system and process powered by geothermal energy > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,759,933 B2 - Document ID: US12759933B2 - Status: Granted - Kind: B2 - Application number: 18/367,837 - Filed: 2023-09-13 - Published: 2025-03-13 - Granted: 2026-10-13 - Earliest claimed: 2023-09-13 - Assignees: Enhanced GEO Holdings LLC - Applicants: EnhancedGEO Holdings, LLC - Inventors: Greg Lindberg; Kimberly C. Conner; James Michael Browning - Web page: https://patentgrep.com/patent/US12759933B2 ## CPC - C04B 7/4407: {Treatment or selection of the fuel therefor, e.g. use of hazardous waste as secondary fuel (fuels in general C10L); Use of particular energy sources, e.g. waste hot gases from other processes} - C04B 7/47: Cooling {; Waste heat management} - C04B 7/52: Grinding {; After-treatment of ground cement} - F03G 4/00: Devices for producing mechanical power from geothermal energy - F24T 10/10: with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground - F27B 7/10: internally heated, e.g. by means of passages in the wall - F27B 7/36: Arrangements of air or gas supply devices - C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE - F03G: SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR (arrangements in connection with power supply in vehicles from force of nature B60K16/00; electric propulsion with power supply in vehicles from force of nature B60L8/00) - F24T: GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS - F27B: FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS ## Abstract A cement production system includes a wellbore extending from a surface into an underground magma reservoir. The wellbore is configured to heat a heat transfer fluid via heat transfer with the underground magma reservoir. Processes for cement production are driven at least in part by energy obtained from the underground magma reservoir. ## Claims ### Claim 1 An industrial system, comprising: a geothermal system comprising a wellbore extending from a surface into an underground magma reservoir, the wellbore configured to heat a heat transfer fluid via heat transfer with the underground magma reservoir, thereby providing heated heat transfer fluid; and a cement product system comprising: a kiln configured to: receive a cement precursor; and sinter the received cement precursor using heat derived, at least in part, from the heated heat transfer fluid, thereby generating a clinker; and a mill configured to mix the clinker with one or more other components to generate cement; wherein the kiln comprises: a lining; and a heat exchanger disposed in or on a surface of the lining, the heat exchanger configured to: receive the heated heat transfer fluid; and transfer heat from the heated heat transfer fluid into the kiln. ### Claim 2 (depends on 1) The industrial system of claim 1, further comprising an air heater configured to heat air using the heated heat transfer fluid to form heated air, wherein the heated air is provided into the kiln. ### Claim 3 (depends on 1) The industrial system of claim 1, wherein the heat exchanger is embedded within the lining. ### Claim 4 (depends on 1) The industrial system of claim 1, wherein the kiln comprises: a burner pipe configured to direct a flammable material into the kiln; and the heat exchanger configured to heat the burner pipe using the heated heat transfer fluid. ### Claim 5 (depends on 4) The industrial system of claim 4, wherein the heat exchanger comprises a coil adjacent to or in contact with the burner pipe. ### Claim 6 (depends on 4) The industrial system of claim 4, further comprising one or more geothermally powered motors configured to use the heated heat transfer fluid to perform mechanical operations of the cement production system, wherein the mechanical operations comprise one or more of: powering a crusher; powering a blending subsystem; powering movable components of the kiln; and powering the mill. ### Claim 7 (depends on 1) The industrial system of claim 1, further comprising a heat-driven chiller configured to: receive the heated heat transfer fluid; generate a cooling fluid using the received heat transfer fluid; and provide the cooling fluid to a cooler configured to cool the clinker prior to the clinker being mixed with the other components in the mill. ### Claim 8 (depends on 1) The industrial system of claim 1, further comprising a carbon capture system configured to: collect carbon dioxide from a gas exiting the kiln; and direct all or a portion of the collected carbon dioxide into the kiln, such that at least a portion of carbon from the carbon dioxide directed into the kiln is incorporated into the clinker. ### Claim 9 A method of producing cement, the method comprising: heating a heat transfer fluid, transported through a wellbore extending from a surface into an underground magma reservoir, via heat transfer with the underground magma reservoir, thereby generating a heated heat transfer fluid; receiving, by a kiln, a cement precursor; sintering, by the kiln, the received cement precursor using heat derived, at least in part, from the heated heat transfer fluid, thereby generating a clinker; mixing, with a mill, the clinker with one or more other components to generate the cement, and by a heat exchanger disposed in or on a surface of a lining of the kiln: receiving the heated heat transfer fluid; and transferring heat from the heated heat transfer fluid into the kiln. ### Claim 10 (depends on 9) The method of claim 9, further comprising, by an air heater, heating air using the heated heat transfer fluid to form heated air, wherein the heated air is provided into the kiln. ### Claim 11 (depends on 9) The method of claim 9, wherein the heat exchanger is embedded within the lining. ### Claim 12 (depends on 9) The method of claim 9, further comprising: directing a flammable material into the kiln via a burner pipe; and heating the burner pipe by flowing the heated heat transfer fluid through the heat exchanger. ### Claim 13 (depends on 12) The method of claim 12, wherein the heat exchanger comprises a coil adjacent to or in contact with the burner pipe. ### Claim 14 (depends on 12) The method of claim 12, further comprising using the heated heat transfer fluid to perform mechanical operations for producing the cement, wherein the mechanical operations comprise one or more of: powering a crusher; powering a blending subsystem; powering movable components of the kiln; and powering a mill. ### Claim 15 (depends on 9) The method of claim 9, further comprising, by a heat-driven chiller: receiving the heated heat transfer fluid; generating a cooling fluid using the received heated heat transfer fluid; and providing the cooling fluid to a cooler configured to cool the clinker prior to the clinker being mixed with the one or more other components. ### Claim 16 (depends on 9) The method of claim 9, further comprising: collecting carbon dioxide from a gas exiting the kiln; and directing all or a portion of the collected carbon dioxide into the kiln, such that at least a portion of carbon from the carbon dioxide directed into the kiln is incorporated into the clinker. ### Claim 17 A cement production system, comprising: a kiln configured to: receive a cement precursor; and sinter the received cement precursor at least in part using a heated heat transfer fluid received from a geothermal system, comprising a wellbore extending from a surface into an underground magma reservoir, the wellbore configured to heat a heat transfer fluid via heat transfer with the underground magma reservoir, thereby generating a clinker; and a mill configured to mix the clinker with one or more other components to generate cement; wherein the kiln comprises: a lining; and a heat exchanger disposed in or on a surface of the lining, the heat exchanger configured to: receive the heated heat transfer fluid; and transfer heat from the heated heat transfer fluid into the kiln. ### Claim 18 (depends on 17) The cement production system of claim 17, further comprising an air heater configured to heat air provided into the kiln using the heated heat transfer fluid.