861 results about "Solid fuel" patented technology

The invention provides low-carbon fuel blending coupling combustion test equipment and method, and the equipment comprises a blending fuel feeding system which is used for blending solid-phase, liquid-phase and gas-phase low-carbon fuels with fossil solid fuels or other solid fuels in proportion; the one-dimensional combustion furnace is used for coupling combustion of the blended fuel; the flue gas treatment system is used for carrying out cooling, dust removal, desulfurization, denitration and carbon dioxide adsorption and trapping treatment on flue gas generated by coupling combustion; the control cabinet is used for controlling the stable and safe operation of the whole experiment platform; the low-carbon coupling combustion test system and method and the coupling combustion low-carbon technology have the beneficial effects that the coupling combustion condition that the actual boiler is internally mixed with low-carbon fuel is simulated by adopting a feeding and conveying mode of accurately controlling the blending combustion proportion, and the low-carbon coupling combustion test system and method and the coupling combustion low-carbon technology are formed; the device has multiple innovative functions of controlling the blending combustion ratio, efficiently coupling combustion, comprehensively purifying flue gas, adsorbing and trapping carbon dioxide, saving energy, reducing carbon and the like.

The invention belongs to the technical field of solid fuel cells, and particularly relates to a hybrid-driven SOFC (Solid Oxide Fuel Cell) combined heat and power system service life prediction method, which comprises establishment of an SOFC system dynamic attenuation model and establishment of a hybrid-driven SOFC system service life prediction model. The service life of the system is predicted by simulating the dynamic attenuation of the SOFC combined heat and power system and performing machine learning, so that the performance of the whole SOFC combined heat and power system is predicted, and the influence of the interaction of each component on the service life of the system under the long-time operation of the system is analyzed. The method is short in test time and high in accuracy, the cost is saved, and the research and development progress is accelerated; an important reference basis is provided for long-life operation of the system, the influence of BOP parts on the whole life of the system can be clearly analyzed, and a direction is pointed out for the long-life operation of the system; and a machine learning method is utilized to avoid accidental results possibly existing in single simulation, so that the results have universality.

The invention discloses a red mud reduction, magnetic separation and recovery device and process based on chemical looping gasification. The device comprises a chemical looping gasification device, a red mud feeder, a bag-type dust collector and a magnetic separator, the chemical chain gasification device comprises an air reactor, a first cyclone separator, a fuel reactor, a solid fuel feeder and a second cyclone separator, wherein the upper part of the air reactor is connected with a feed port of the first cyclone separator, a discharge port of the first cyclone separator is connected with the upper part of the combustion reactor, and the upper part of the fuel reactor is connected with a feed port of the second cyclone separator; the top of the second cyclone separator is connected with the bag-type dust collector through a fuel reactor tail flue, and the magnetic separator is connected with an ash discharge port of the bag-type dust collector; and the red mud feeder is connected with the bottom of the fuel reactor. Chemical looping gasification and red mud reduction roasting magnetic separation are combined, and iron element recovery and oxygen carrier replacement are achieved.

Provided is a method for controlling a boiler, the boiler including: a solid fuel burner that uses a solid fuel in a furnace to form a flame; a solid fuel adjustment unit that adjusts a supply amount of the solid fuel supplied to the solid fuel burner; an ammonia fuel burner that uses an ammonia fuel in the furnace to form a flame; and an ammonia fuel adjustment unit that adjusts a supply amount of the ammonia fuel supplied to the ammonia fuel burner, said method comprising a control step for controlling the solid fuel adjustment unit and the ammonia fuel adjustment unit, wherein, in the control step (S102), when a load increase operation for increasing the load of the boiler is performed, the ammonia fuel adjustment unit is controlled so as to increase the supply amount of the ammonia fuel supplied to the ammonia fuel burner during an operation period from the start of the load increase operation to the completion thereof.

The invention relates to the technical field of sintering technology and environmental resources in the iron and steel industry, in particular to a method for recycling sintered waste activated carbon powder, which comprises the following steps: mixing waste activated carbon powder with a flux and iron ore concentrate to prepare small balls with different carbon contents; the method has the beneficial effects that the waste activated carbon is efficiently and fully utilized in the longitudinal sintering direction, and the purposes of reducing the consumption of sintering solid fuel, improving the sintering efficiency and improving the sintering quality are achieved. Heat required by effective mineralization of the upper portion and the edge of the sintering trolley is improved, the quality of sintered ore on the upper layer and the edge of the sintering trolley is improved, and finally the purpose of reducing production and operation cost is achieved.

The invention discloses a photovoltaic-driven IDC electric-cooling linkage method and device, and belongs to the technical field of IDC electric-cooling linkage, and the method comprises the following steps: S1, constructing a gravity energy storage structure; s2, the gravity object is lifted to the highest point of the gravity object channel through the gravity energy storage structure; s3, air at the bottom of the gravity object channel is compressed for the second time, and a thermal cracking reaction is carried out; s4, thermal cracking gas generated by the thermal cracking reaction is drained, and combustion products are discharged into a gas storage chamber; s5, the generated steam waste heat pushes a turbine in a turbine chamber to do work for power generation; and S6, domestic hot water and night heating hot water are prepared, convective heat exchange is conducted, the low-temperature reclaimed water obtained after heat exchange is heated into high-temperature steam in a cooler, the high-temperature steam enters a turbine to become high-temperature reclaimed water, and the high-temperature reclaimed water flows into a control center or a water storage pool. The organic matter compressed garbage is used as a gravity object for gravity energy storage, and heavy oil, solid fuel, adsorbents and other high-value products are produced in the gravity energy storage process.

The invention discloses a production method of ultralow FeO sintered ore, and belongs to the technical field of ferrous metallurgy. The method comprises the following steps: dividing fuel into a fuel I and a fuel II, and mixing and granulating the fuel I and a sintering raw material to obtain a sintered material; distributing the sintered material to a sintering machine, and then distributing the fuel II on the surface of the sintered material; igniting, preserving heat, sintering and cooling; in the sintering process, an oxygen-enriched gas medium is blown to the surface of the sintered material; in the cooling process, air draft cooling is conducted on a sintering machine, and then materials are discharged into a circular cooler to be cooled. According to the method, the oxygen potential of a sintering material layer is improved by reducing the proportion of sintering fuel, so that the FeO oxidation efficiency of the sintered ore is improved, and ultralow FeO < lt > can be produced; by means of the method, the solid fuel consumption of sintering and the FeO content of the sintering ore can be greatly reduced, the reducibility of the sintering ore can be improved, the coke ratio of a blast furnace can be reduced, and therefore the overall fuel consumption level of the ironmaking process is reduced.

The invention relates to the technical field of fuel screening devices, and discloses a fuel screening, premixing and combustion strengthening device which comprises a conveying belt, the conveying belt is installed on a support through two rollers, and one end of the conveying belt is used for receiving fuel particles; the mesh core screen is arranged on the conveying belt, a plurality of screening holes are formed in the mesh core screen, and the conveying belt screens fuel particles through the screening holes; the preheating part is arranged above the conveying belt, a preheating cavity is formed between the preheating part and the conveying belt and used for preheating the fuel particles on the conveying belt, and the preheating part is communicated with external hot waste gas; and the collecting piece is arranged below the conveying belt and used for collecting the fuel particles screened by the conveying belt. The effect of improving the fuel utilization rate through fine screening is achieved, it is avoided that too much small-particle fuel influences mineral melting, sintered solid fuel is fully dried and preheated, and the temperature fluctuation and incomplete combustion phenomena occurring in the combustion process are reduced.

The invention discloses a multistage self-adaptive enhanced mixing device for a solid fuel ramjet engine, which belongs to the technical field of solid fuel ramjet engines and comprises a front flange, a rear flange, an afterburning chamber barrel, a mixing partition plate, a heat insulating layer, a pressure measuring seat and a temperature measuring seat. The front flange and the rear flange are welded with the afterburning chamber barrel, a water pressure test is carried out after welding is completed, the mixing partition plates are bonded to the inner wall of the afterburning chamber barrel through high-temperature-resistant glue, and the mixing partition plates are distributed in a multi-stage mode, are separated through a heat insulation layer and are bonded through the high-temperature-resistant glue. In order to verify the effect of the multi-stage self-adaptive enhanced mixing device for the solid fuel ramjet engine, a pressure measuring point and a temperature measuring point are arranged on an afterburning chamber barrel and a mixing partition plate; according to the multi-stage self-adaptive enhanced mixing device, the combustion efficiency of a solid fuel ramjet can be remarkably improved, and the efficiency is further improved along with the increase of the number of the mixing partition plates.

The invention discloses a solid fuel environmental protection project online intelligent early warning system based on big data, relates to the technical field of data processing, and solves the problem that it is difficult to establish a solid fuel environmental protection project database and store monitoring data; a temperature pollutant diffusion correlation model is difficult to establish, and the pollutant discharge rate and the pollutant diffusion influence range are analyzed; the influence degree of the solid fuel on environment sensitive areas, soil and underground water is difficult to evaluate; and an environmental protection risk assessment index is difficult to comprehensively assess and three-level early warning is difficult to establish according to the above technical problems. According to the invention, the monitoring and early warning of the solid fuel environmental protection project are realized by comprehensively evaluating the environmental protection risk evaluation indexes of the solid fuel to atmosphere, soil, underground water and environmental sensitive areas in each link.

The invention relates to the technical field of steel sintering processes, in particular to a biomass gasification coupling system for a steel sintering process, which comprises a biomass gasification system, a circular cooler waste heat utilization system and a waste heat power generation system, the biomass gasification system comprises a biomass drying system, a raw material conveying belt system, a biomass gasification furnace, a biomass gas heat insulation combustion chamber, a sintered coke powder preparation system and a biomass gas purification system, and the biomass drying system is used for drying biomass raw materials; and the dried biomass raw materials are conveyed to the biomass gasification furnace through the raw material conveying belt system. According to the coupling system for biomass gasification for the steel sintering process and the control method, biomass serves as zero-carbon energy, and biomass charcoal obtained after biomass gasification can replace part of solid fuel to achieve the carbon reduction effect. Meanwhile, the biomass gasified gas can replace a part of coal gas, and the carbon reduction effect can also be achieved.

The invention discloses a solid oxide fuel cell performance influence analysis method which comprises the following steps: establishing a three-dimensional model of a solid oxide fuel cell according to geometric parameters of the solid oxide fuel cell; selectively adding multiple physical fields coupled with an electric field, a flow field, a temperature field and a concentration field into the constructed three-dimensional model; determining boundary conditions influencing the performance of the solid oxide fuel cell, wherein the boundary conditions comprise a gas inflow mode, operation parameters and geometric parameters; according to the selected boundary conditions, obtaining steady-state calculation results of the solid oxide fuel cell in a multi-physical field under different working conditions; and according to a steady-state calculation result, analyzing a characteristic relationship between each parameter and the solid oxide fuel cell, and carrying out reasonable analysis on factors influencing the performance of the solid fuel cell. According to the method, the performance influence factors of the solid oxide fuel cell are analyzed, and reference is provided for performance optimization.

This solid fuel comprises: a biocoke of at least 85% fixed carbon on the anhydrous ash-free basis; and an inorganic binder containing CaO in a dry state at 50 mass% or higher. This method for producing a solid fuel comprises a step in which a solid fuel is obtained by kneading and molding a molding starting material comprising: a biocoke of at least 85% fixed carbon on the anhydrous ash-free basis; an inorganic binder containing CaO in a dry state at 50 mass% or higher; and water.

The invention relates to the technical field of solid fuel cells, and discloses a porous gradient anode supported solid fuel cell impedance optimization method which is applied to a system comprising a plurality of porous gradient anode impedance sensors and an optimization controller. The method comprises the steps that a sensor collects voltage and current data to generate an impedance state data set; the optimization controller constructs a regional impedance state matrix, extracts features through processing, performs impedance distribution prediction in combination with a potential gradient and the like, outputs spatial and temporal distribution features through an impedance optimization model, and updates a data set; and dynamically optimizing regional electrode parameters according to the distribution characteristics, including voltage adjustment, current aggregation, resistance distribution and other operations. According to the method, through multi-sensor distributed acquisition, multi-dimensional feature analysis and dynamic modeling, accurate prediction and parameter dynamic regulation and control of electrode impedance spatial and temporal distribution are realized, the performance and stability of the solid fuel cell are improved, and the method is suitable for the field of solid fuel cell management.

To accelerate a load change speed of a boiler when performing a load change operation for changing a load of the boiler for combusting both solid fuel and ammonia fuel by a furnace.SOLUTION: In a control method of a boiler, the boiler has a solid fuel burner for forming a flame by using solid fuel in a furnace, a solid fuel adjustment part for adjusting a supply quantity of the solid fuel which is supplied to the solid fuel burner, an ammonia fuel burner for forming a flame by using ammonia fuel in the furnace, and an ammonia fuel adjustment part for adjusting a supply quantity of the ammonia fuel which is supplied to the ammonia fuel burner. The control method also comprises a control step for controlling the solid fuel adjustment part and the ammonia fuel adjustment part, and when performing a load increase operation for increasing a load of the boiler, the control step S102 controls the ammonia fuel adjustment part so that the supply quantity of the ammonia fuel which is supplied to the ammonia fuel burner is increased in an operation period from a start of the load increase operation up to a finish thereof.SELECTED DRAWING: Figure 5

The invention relates to a circulating fluidized bed boiler system, comprising: a main circulating fluidized bed boiler comprising a main hearth, a main separator, a main return feeder and a flue; the activation and modification device comprises a coal slime inlet and a gas-solid fuel outlet, the coal slime is suitable for being at least partially gasified and combusted in the activation and modification device to form gas-solid fuel flowing out of the gas-solid fuel outlet, and the gas-solid fuel outlet is communicated with a fuel nozzle arranged in the main hearth. The invention further relates to a coal slime activating treatment method which comprises the following steps: at least part of coal slime is gasified and combusted in the activating and modifying device to generate gas-solid fuel; and gas-solid fuel is led to the middle lower part of the hearth of the circulating fluidized bed boiler. The scheme can be used for flexible peak regulation of the boiler.

The present invention relates to the technical field of municipal sludge and industrial sludge treatment methods. Disclosed is a hydrothermal carbonization-based method for comprehensively treating iron-containing sludge and straw, comprising the following steps: 1) crushing and sieving straw, primarily dehydrating iron-containing sludge, and adding a catalyst for catalytic wet oxidation treatment; 2) adding wet-oxidized iron-containing sludge and a crushed and sieved fiber to a raw material storage tank and adding a dehydrating agent for dehydration treatment; 3) preheating a raw material conveying tank and then feeding the material into a reactor for a hydrothermal carbonization reaction; 4) collecting the resulting biochar slurry to a collecting tank for cooling; and 5) adding an appropriate amount of pulverized coal to the material and then carrying out plate press dehydration, or directly carrying out plate press dehydration, the material being used as a solid fuel. The present invention integrates two techniques, i.e., anaerobic digestion and hydrothermal carbonization, for sludge treatment, and the process is optimized from material and energy balance perspectives, so that the solid fuel and biochar substances are generated while sludge reduction is realized; moreover, the operation cost of the process is reduced, and the generated hydrothermal carbon can be either returned to the field for use or be used as an additive to promote anaerobic digestion, and also exhibits magnetism and can be recycled.

To burn hydrogen safely and easily. [Solution] The combustion device has a hot water generating unit 1 equipped with a storage unit 112 for storing water, a placement unit 113 for placing solid fuel that reacts with the water in the storage unit 112 to release hydrogen, and a combustion unit for burning the generated hydrogen, and a control unit for controlling the temperature of the stored water.

An oven 310 comprises an oven chamber 370, a port 350 for a demountable heated air source at a rear of the oven, and a flue 330 from the oven chamber. A first heated air source comprising a gas burner (380, figure 5B) and a variable air inlet 346 for use with a second heated air source which comprises a solid fuel carrier 340 may each be demountably receivable by the port, where only the variable air inlet or the first heated air source can be received by the port at the same time. An air flow director 374 may have an upper portion extending downwards, a rear surface that faces the rear of the oven, and a lower portion which directs air flowing down the rear surface more rearwardly, where the air flow director deflects heated air away from the flue and downwards towards the cooking surface. The flue may comprise a valve configured such that, when in a closed position, an open cross-sectional area of the flue through which air can flow out of the oven is at least 25% of the open cross-sectional area of the flue when the valve is in an open position.

The invention discloses multi-component composite doped zirconium oxide powder for a solid fuel cell and a preparation method of the multi-component composite doped zirconium oxide powder, and belongs to the technical field of solid fuel cells. The process comprises the following steps: mixing zirconium oxychloride with a stabilizer soluble salt and a composite additive, adding water, heating and hydrolyzing to obtain a mixed solution, continuously stirring, adjusting the pH value, filtering, cleaning and drying to obtain mixed powder A; zirconium oxychloride, carbon nanotubes and an organic framework are mixed and modified, a modified mixture, yttrium oxide, calcium oxide and magnesium oxide are mixed and ground, and mixed powder B is obtained; and grinding and mixing the mixed powder A and the mixed powder B, and carrying out two-step calcination to obtain the multi-component composite doped nano zirconium oxide powder. The nano zirconium oxide powder disclosed by the invention has relatively high oxygen ion conductivity, can keep excellent stability in a high-temperature environment, meets the high-performance requirements of various solid fuel cell electrolytes, and has good market competitiveness.

A method for pretreating a feed material, the method comprising: subjecting either coal that is outside the blast-furnace-production range or a coal-substitute solid fuel to a dry distillation treatment under such conditions that the maximum dry distillation temperature is 900°C or higher; separating the combustible substances resulting from the dry distillation treatment into a solid fuel, a liquid fuel, and a gaseous fuel; and blowing some or all of the solid fuel, liquid fuel, or gaseous fuel into a metallurgical furnace.

The invention relates to the technical field of sintering processes, in particular to a preparation method of low-cost low-carbon sinter, which comprises the following steps: establishing a perfect crude fuel ingredient database; establishing a cost performance evaluation calculation model; controlling the granularity of iron ore powder, solid fuel and flux; associating the cost performance model with batching software through a computer language to obtain crude fuel with high cost performance and sequencing the crude fuel; key parameters of sintering ore burdening are set; and a cloud computing service system is adopted, so that an optimal scheme for automatically optimizing ingredients is realized. The method has the advantages that the effects of reducing the batching cost and reducing the solid fuel consumption are obvious, and the annual benefit is more than 1,500-1,7500 million yuan; secondly, solid fuel is reduced, CO2 emission is reduced annually, and good social benefits are achieved; by means of the modern computer technology, ore blending software is wide in measuring and calculating range, short in period and easy to operate, decision basis is provided for manufacturing enterprises to reduce sinter cost and solid fuel consumption, and sinter quality is improved.

The invention discloses industrial solid waste treatment and resource utilization, and particularly relates to a washing-free sintering resource treatment method for household garbage incineration fly ash. Fly ash which is not washed with water, a silicon-aluminum hardening and tempering agent and solid fuel are mixed according to a specific proportion, granulated and sintered, and dioxin control and heavy metal directional migration are achieved through the temperature gradient of a material layer. According to the invention, low-temperature (1t, 150 DEG C) and low-pollution flue gas is shunted for common purification according to the temperature and component difference of flue gas at each sintering section, and dust (product dust) is returned for utilization; high-temperature (more than or equal to 150 DEG C) and high-pollution flue gas is divided for quenching and activated carbon deep purification, and dust (heavy metal concentrated ash) of the flue gas is sold for metallurgy. According to the invention, the fly ash washing link is thoroughly omitted, and the consumption of the adsorbent and the operation cost are greatly reduced while ultra-low emission is ensured through a flue gas quality-dividing and flow-dividing technology, so that low-cost, thorough harmlessness and high-value recycling of the fly ash are realized.

The invention discloses a low-alkalinity sintering control method and a low-alkalinity sintering control system. The method comprises the following steps: measuring liquid phase fluidity indexes and binding phase strength indexes of various iron ore powder on a production site; the iron ore powder with the high comprehensive score, fuel, flux and return mine are mixed and granulated, a mixture with the high alkalinity is formed, the iron ore powder with the low comprehensive score and a binder are mixed and granulated, and a base material with the natural alkalinity is formed; and mixing the matrix material and the mixture according to a certain proportion to form a sintered material with alkalinity lower than 1.8, and distributing, igniting and sintering the sintered material. A high-alkalinity mixture with liquid phase fluidity and binding phase strength is adopted to wrap a low-alkalinity matrix material bonded by a solid phase to form a high-strength sintered material, the alkalinity of the sintered material is lower than that of a traditional sintered material, the solid fuel consumption is low, and the yield of the sintered ore is improved.

Internal combustion engines, including engines producing power from solid or slow burning fuel(s), such as biological-based or petroleum-based fuels, wood, corn, biomass, coal, and waste products, and / or possibly other liquid or gaseous fluids, as well as methods for operating or implementing such engines, are disclosed herein. In an example embodiment, the engine includes a crankshaft, a piston, a cylinder having an internal cavity and several ports, and an assembly having a chamber having a first region within which solid fuel can be situated and combusted. The assembly further includes a diverter valve so that, depending upon a setting of the valve and during engine operation, first and second amounts of compressed air respectively proceed to the first region and to bypass the first region, and a combination of combustion products and the second amount proceeds via one of the ports to the part of the internal cavity.

The invention relates to a method for determining the optimal amount of injected hydrogen-rich gas based on a hydrogen-rich blast furnace energy mass model. The method comprises the following steps: constructing a hydrogen-rich blast furnace energy mass balance model; inputting initial conditions of the constructed energy and mass balance model of the hydrogen-rich blast furnace; adjusting an iterative hydrogen utilization rate and a theoretical combustion temperature parameter; on the basis of the material balance relative error and the heat loss constraint condition, the constraint condition in the subsequent prediction process is stipulated; the consumption of the solid fuel is reduced while the injection amount of the hydrogen-rich gas is increased; the solid fuel ratio and the carbon emission under each injection system are obtained; and the optimal hydrogen-rich gas spraying amount of the hydrogen-rich blast furnace is determined. According to the method, the hydrogen-rich effects of a small amount of hydrogen-rich gas and a large amount of hydrogen-rich gas are fully considered, the influence on the solid fuel ratio, carbon emission and other parameters after the hydrogen-rich gas is injected is scientifically evaluated, and then the optimal selection of the injection amount of the hydrogen-rich gas is achieved, so that the hydrogen-rich injection effect is guaranteed, the fuel utilization rate is increased, and energy is saved.

The invention provides a method for preparing carbon fuel from corn straw based on a functional composite binder, and belongs to the technical field of biomass solid fuel preparation. The preparation method comprises the following steps: uniformly mixing corn stalk charcoal powder with a functional composite binder to obtain a mixture, and then carrying out hot-pressing activation molding to obtain the corn stalk charcoal fuel. The functional composite binder comprises the following raw materials: phosphoric acid, polysilicic acid, polyethylene and sodium lignin sulfonate; the addition amount of the functional composite binder in the corn stalk carbon powder is 10-15 wt.%. According to the method, the controllability of the quality of the raw material carbon is greatly improved, the functional composite binder is adopted, the forming density, falling and breaking resistance and durability of the carbon fuel are improved, the process stability and repeatability are high, and a foundation is laid for large-scale production.

The invention discloses a small liquid-solid dual-fuel molten salt reactor core loaded with a cross spiral fuel, and relates to the technical field of nuclear reactor engineering. The reactor core of the small liquid-solid dual-fuel fused salt reactor loaded with the cross spiral fuel comprises two parts, namely an active area and a control drum, the control drum comprises a reflecting layer and a control drum absorbing material, the reflecting layer is made of beryllium oxide, and the control drum absorbing material is boron carbide with the boron 10 enrichment degree of 100%; the active area is composed of a fuel element and a fluoride salt coolant, and the whole active area is packaged in a shell made of Zr-4; the fuel element is in a cross spiral shape and is arranged in a regular hexagon shape, the fuel element is composed of an axial reflecting layer, fuel, a He cavity and an Re absorber, and the fuel is UC solid fuel with the U-235 enrichment degree being 45.684 wt.%; the material of the fluoride salt coolant is 7LiF-KF-UF4 (49.55 to 49.55 to 0.9 mol%), wherein the enrichment degree of U-235 in the UF4 is 30 percent by weight. According to the invention, the reactor core power density is further improved and the fuel peak temperature is effectively reduced while the reactor core heat is ensured to be discharged in time.

The invention discloses a high-aluminum limonite and specularite ore blending and sintering method which comprises the following steps: 1) preparing primary pre-blending powder: pre-blending high-aluminum limonite, specularite concentrate powder, iron oxide scale, limestone powder and anthracite powder to prepare the primary pre-blending powder with the water content of 6.5-7%; (2) preparing a uniformly mixed material: blending the primary pre-blended material powder obtained in the step (1) with high-silicon iron ore powder and hematite and limonite powder to prepare the uniformly mixed material; 3) sintering and burdening: burdening the uniformly mixed material obtained in the step 2) with limestone, dolomite powder, quicklime, solid fuel and return mine, and 4) controlling the components of the sintered ore as follows: 2.3-2.5% of Al2O3, 5.7-6.5% of SiO2, 8-8.5% of FeO and 1.85-2.5% of MgO. According to the invention, while 20-30% of the proportion of the discount ore silk road powder in the total uniformly mixed material is increased, the sintering cost is reduced by 20-42 yuan / ton, the drum strength of the sintered ore is greater than or equal to 78.5%, the return mine rate is less than or equal to 27%, and the RDI + 3.15 mm is greater than or equal to 63%.

The disclosed embodiments provide a temperature controlled charcoal grill and smoker that enables users to better control the cooking and smoking temperature relative to previous solutions. In some embodiments, for example, a user may place a divider in the interior of a fuel basket to coarsely adjust the amount and type of solid fuel used to heat a food-cooking enclosure of the temperature controlled charcoal grill and smoker. In addition, the user can also position a heat deflector tent above one or more heat transfer openings in a grease tray to further adjust the cooking and smoking temperature. Further still, the user can provide even finer control (including closed-loop control) over the cooking and smoking temperature using a controller that controls the speed of a fan that directs combustion air into the fuel basket.