40 results about "Residual carbon" patented technology

The utility model discloses a dehumidification waste powder bin structure, including waste powder bin, scraper and drum core, the waste powder bin is provided with the powder storage chamber and dehumidification chamber, the drum core sets up on the waste powder bin and sets up in the opening position close to the powder storage chamber, the scraper sets up on the waste powder bin and is pasted with the drum core, the scraper is used for cleaning the carbon powder remaining on the drum core surface when the drum core rotates, the dehumidification chamber is used for placing the dehumidification piece, and the dehumidification chamber is provided with the opening communicating with the outside. The dehumidification chamber provided with the waste powder bin can place the dehumidification piece, and the opening communicating with the outside design can make the whole selenium drum interior and the dehumidifier interior communicate, make the air interflow, thereby the dehumidification piece can continuously absorb the moisture in the whole selenium drum interior, and effectively prevent the accessory from being affected by damp and printing effect.

The utility model discloses a steam gasification reactor, include: reaction furnace, the hollow interlayer between the inner furnace body and the outer furnace body of reaction furnace, be provided with the air outlet pipe and the air inlet pipe on the lateral wall of outer furnace body, be provided with the feed inlet and synthesis gas output pipeline of sealed connection with the export of feed auger on the lateral wall of inner furnace body, be provided with the refractory cement pouring layer of the lower section of inner furnace body furnace chamber, the ash outlet passageway is set up in the middle part of refractory cement pouring layer, and the rest of refractory cement pouring layer evenly interval sets up a plurality of installation passageways, and one air cap structure is correspondingly set up in each installation passageway, and the steam air inlet pipe is sealed through the through -hole on the reaction furnace and is connected with the air inlet hole of each air cap structure bottom through annular pipeline after passing, and the open mouth of inner furnace body bottom is installed with the ash outlet, and the ash outlet valve is installed at the ash outlet of ash outlet, and the reaction furnace is wrapped with the refractory layer. The above-mentioned equipment has the advantages of high gasification efficiency, basically no tar residue, basically no residual carbon residue etc.

The application relates to the technical field of materials, in particular to an anti-erosion low-carbon backing brick refractory material and a preparation method thereof, which comprises fused magnesia coarse aggregate, fused magnesia medium aggregate, fused magnesia fine powder, zircon carbide anchoring modified flaky graphite, boron-doped lignin-based titanium carbide composite powder, nano hafnium carbide and phenolic resin binder; the synergistic protection of the three functional components of the zircon carbide anchoring modified flaky graphite, the boron-doped lignin-based titanium carbide composite powder and the nano hafnium carbide effectively solves the problems that, under the VD vacuum degassing working condition, the MgO in the existing low-carbon magnesia-carbon backing brick reacts with residual carbon in the brick to cause gasification, and the antioxidation additive promotes the reaction and aggravates the damage to the brick structure.

The application discloses a kind of ship carbon capture's cascade processing system and processing method, including absorption tower and desorption tower, absorption tower is sequentially arranged first absorption section and second absorption section from bottom to top, desorption tower is sequentially arranged first desorption section and second desorption section from top to bottom, flue gas inlet is located at the bottom of absorption tower, high-temperature steam inlet is located at the bottom of desorption tower.First absorption section uses low-cost amine liquid, absorbs a large amount of carbon dioxide in tail gas;Second absorption section uses special amine liquid to deeply capture residual carbon dioxide.First rich liquid discharged from first absorption section is transported to first desorption section at the upper part of desorption tower through first pipeline;Second rich liquid discharged from second absorption section is transported to second desorption section at the lower part of desorption tower through second pipeline, two-way rich liquid is cross-connected with desorption tower, to realize heat cascade utilization.The application is collaboratively designed by grading absorption and gradient desorption, to reduce the cost of reagent while improving heat utilization efficiency.

This invention, entitled "A Method for Detecting Raw Calcium Carbide in Calcium Carbide Slag," belongs to the field of chemical analysis and testing technology. The technical problem to be solved is that existing technologies suffer from poor accuracy in gas volume measurement, complex equipment, low safety, and inaccurate measurement results due to carbon dioxide interference. The key points of the technical solution are: taking a dry calcium carbide slag sample and determining its initial mass M0; drying the sample to constant weight under an inert atmosphere and determining its dry basis mass M1; mixing the sample with water under an inert atmosphere to react completely with residual calcium carbide; drying the mixture to constant weight under an inert atmosphere and determining its post-reaction mass M2; and calculating the residual calcium carbide content in the sample based on the mass difference between the dry basis mass M1 and the post-reaction mass M2, combined with the stoichiometric relationship of the reaction between calcium carbide and water.

The application provides a flame-retardant composite PVC alloy material and a preparation method thereof, and belongs to the technical field of flame-retardant materials.The flame-retardant composite PVC alloy material contains PVC, AS and ZnCl2 in components;in a combustion process, ZnCl2 can interact with the structure generated by the dehydrochlorination of PVC, the nitrile group of the acrylonitrile unit in AS and the aromatic structure of the styrene unit, promotes crosslinking of chain segments, cyclization of the nitrile group and aromatization reaction, and makes more combustible cracking products be converted into condensed phase residual carbon.At the same time, the existing technical prejudice that AS is flammable and flame retardant of PVC can only add flame retardant is overcome.Through the ingenious cooperation of the functions of the three components of PVC, AS and ZnCl2, the effect of jointly improving the flame-retardant property of the material is achieved.The flame-retardant composite PVC alloy material has good compatibility of components, uniform and excellent flame-retardant effect, no migration segregation, and no toxic gas generated in the combustion process.

The application discloses a kind of boiler combustion monitoring method and device, including to monitoring unit injection flue gas;Carbon dioxide concentration is detected to air inlet end and data is recorded;By injecting oxygen in reaction furnace, carbon particles in flue gas can be fully combusted in furnace;Carbon dioxide concentration is detected to air outlet end and data is recorded;The difference of carbon dioxide concentration in different ports determines how much residual carbon carried in flue gas.The beneficial effects of the present application are that by real-time detection of fly ash carbon content, it is convenient for staff to quickly record data and feedback maintenance, which is beneficial to guide the correct adjustment of wind-coal ratio and improve the level of boiler combustion control;Reasonably control the index of fly ash carbon content, which is beneficial to reduce power generation cost and improve the economy of unit operation.

This invention discloses a biomass-based hard carbon composite material prepared by quantitative analysis of hard carbon pore volume, a method thereof, a negative electrode material, and a battery. The method provided by this invention first uniformly disperses a pore-forming agent in biomass powder, and after pre-carbonization and washing, obtains a porous carbon matrix. This step simultaneously completes pore formation during pre-carbonization, preparing a porous carbon matrix with a certain pore volume. Subsequent steps design the amount of soft carbon precursor based on the total pore volume, enabling quantitative and rational use of the soft carbon precursor, resulting in consistent product performance and facilitating industrial production. It also avoids the problem of inconsistent soft carbon raw material ratios due to the diversity of biomass sources. Furthermore, this invention utilizes the chemical cross-linking reaction between asphalt and biomass carbon, not only improving the residual carbon rate but also constructing a unique structure rich in closed pores and ultramicropores, effectively solving the problems of low initial coulombic efficiency and insufficient plateau capacity in traditional hard carbon materials.

The present invention provides a fuel oil composition that combines excellent ignition performance, superior environmental performance due to reduced sulfur content, and atomization performance, while also reducing the cost of desulfurization treatment during the manufacturing of the fuel oil composition. [Solution] The composition comprises waste plastic decomposition oil, at least one diesel fraction selected from direct decomposition diesel fraction, desulfurization diesel fraction, straight run diesel fraction, and decomposition diesel fraction, and a residual carbon source, wherein the waste plastic decomposition oil has a content of 0.1% to 75.0% by volume on a basis of the total composition, the diesel fraction includes at least one of the direct decomposition diesel fraction and desulfurization diesel fraction, the total content of the diesel fraction 1 on a basis of the total composition is greater than 0.0% by volume and 50.0% by volume or less, and (1) the cetane index is greater than 43.0, (2) the sulfur content is 0.50% by mass or less, and (3) the kinematic viscosity at 50°C is 3.600 mm 2 A fuel oil composition that satisfies all of the following conditions: / s or less, and a method for producing the same.

The application provides a preparation method of two-dimensional ZSM-5 molecular sieve, comprising the following steps: A) mixing coal gasification fine slag with an activating agent, roasting to obtain a roasting mixture; B) mixing the roasting mixture, a silicon source, a template agent, water and lye to obtain a suspension, aging the suspension and then crystallizing to obtain a crystallization product; and C) calcining the crystallization product to obtain two-dimensional ZSM-5 molecular sieve. In the preparation process of the two-dimensional ZSM-5 molecular sieve, the residual carbon in the coal gasification fine slag is excited to be active by the activating agent, then without any post-treatment process, the template agent, the silicon source, the water and the lye are directly added, and the two-dimensional sheet ZSM-5 molecular sieve is directly synthesized through hydrothermal crystallization, and the method has the advantages of mild synthesis condition, simple steps and high reproducibility.

The application relates to the field of battery management and carbon emission reduction, and specifically discloses a battery full-life-cycle intelligent carbon-saving management and control method fusing peak-valley carbon prices, which comprises the following steps: establishing a dynamic carbon asset net value model, calculating the asset net value in real time based on residual carbon emission reduction potential and historical carbon cost allocation; generating a dynamic expected carbon cost curve fusing a risk premium coefficient, quantifying the upward risk of future carbon cost; taking maximizing the full-cycle carbon asset net value as a target, performing cross-period optimization solution by fusing a health state attenuation model, and generating a long-term optimal charging and discharging plan; and calibrating the model by using actual data through a rolling execution and closed-loop feedback mechanism. The application realizes a paradigm transition of battery management from energy consumption control to carbon asset operation, solves the problems of long-term carbon risk quantification and asset dynamic valuation, and significantly improves the carbon emission reduction benefit and economic value of the battery full-life-cycle.

The application discloses a system and method for coal grading refining and atomic recombination for high-end material, and belongs to the field of coal clean conversion and advanced material manufacturing. The method first converts coal into light aromatic hydrocarbons and a standardized active refined residual carbon with a specific hydrogen-carbon ratio and microstructure under mild conditions through the synergistic effect of high-frequency electromagnetic field, mechanical wave field and strong centrifugal force field. Then, the residual carbon is mixed with self-produced hydrogen-rich gas and activated and decomposed into active carbon species in plasma. Finally, the active species are directionally synthesized into preset high-end materials in a programmable multi-physical field environment. The system correspondingly comprises a hydrogenation refining unit, an activation and decomposition unit, a directional synthesis unit and an intelligent control unit. The application solves the world-wide problem of high energy consumption and poor selectivity in directly synthesizing materials from complex coal through atomicization by creatively preparing a standardized active precursor and realizing deep coupling of two-stage processes, and realizes high-value and materialized utilization of coal resources with almost zero emission.

This invention relates to the field of blast furnace ironmaking technology, and particularly to a method and system for evaluating the reactivity of pulverized coal residue under simulated blast furnace conditions. The method includes drying, grinding, and sieving the pulverized coal sample to be tested, and then feeding it into a high-temperature tubular furnace; setting experimental parameters for the high-temperature tubular furnace to simulate the extreme conditions of the blast furnace tuyeres; collecting prepared standard residue samples; and conducting a gasification reaction test: placing the prepared standard residue samples in a thermogravimetric analyzer and heating them from room temperature to 1100–1500°C at a heating rate of 10–20°C / min under a 100% CO2 atmosphere, or reacting the standard residue samples with CO2 under constant temperature conditions of 1100–1300°C; recording the mass change curve of the sample during the reaction process in real time, and calculating the gasification reactivity index (RCRI) of the residue based on this curve. This invention can accurately and reliably evaluate the gasification reactivity of pulverized coal residue after combustion under simulated blast furnace conditions.

The application discloses a calcination method of high-purity silicon oxide, and belongs to the technical field of high-purity silicon oxide synthesis and preparation. The method is characterized in that a disturbance environment is created by introducing a calcination gas at a certain flow rate, so that the silicon oxide is fully contacted with the calcination gas, thereby enabling the residual organic matter to be fully combusted and the residual carbon to be effectively removed. The residual oxygen in the pores of the silicon dioxide is fully removed by adopting a two-step replacement mode, and the oxygen in the pores is replaced by helium with a lower density. Further, high-temperature calcination is performed in a vacuum environment, and after the residual gas in the pores of the silicon dioxide is discharged, the pores in the silicon dioxide particles are closed. In order to avoid the introduction of water or other gases and impurities again in the cooling process, the inert gas helium is introduced for cooling to room temperature after the vacuum environment is cooled to a certain temperature, and high-purity and high-quality synthetic silicon oxide is obtained.

This invention discloses an adsorption method and apparatus for refined base oil, relating to the field of base oil adsorption technology. The adsorption method proposed in this invention can solve the problem of poor color and short service life caused by the presence of small amounts of gums, asphaltenes, and residual carbon in base oil, without polluting the ecological environment. The adsorption apparatus proposed in this invention includes a reaction chamber; a rotating cylinder is rotatably installed inside the reaction chamber, with a threaded portion on the outer side of the cylinder. The cylinder has a hollow structure, and its interior is divided into two chambers for storing raw materials by a partition. A mixing rod is rotatably installed at the bottom of the cylinder, with its top end communicating with the two chambers. A filter element is vertically slidably installed inside the reaction chamber for quickly filtering precipitates. This adsorption apparatus can accelerate the removal of precipitated substances and improve adsorption efficiency.

This invention discloses a magnesia-carbon brick reinforced by vitamin C acid group pretreatment, made from the following raw materials in weight percentages: 65-71% fused magnesia aggregate, 15-20% fused magnesia fine powder, 8-12% flake graphite, 3-4% thermosetting phenolic resin binder, 0.3-0.8% vitamin C, 1.0-2.0% aluminum powder, 0.5-1.0% lanthanum oxide, and 1-3% chromium powder. The method for preparing the magnesia-carbon brick disclosed in this invention includes: first, dissolving vitamin C in phenolic resin to form a pretreatment solution, then mixing it with magnesia, graphite, and metal powder through a specific mixing process, followed by pressing and sequential heat treatment to obtain the product. Because the acid groups of vitamin C react with MgO to form a "magnesium ascorbate" transition layer, the green strength, residual carbon content, oxidation resistance, and slag erosion resistance of the magnesia-carbon brick are systematically improved.

This application relates to a device and system for activating the blast furnace tuyeres swirling zone, belonging to the technical field of blast furnace ironmaking equipment. It includes an oxygen supply loop pipe, an oxygen supply branch pipe, a pulse box, a pulse pipeline, a pulse lance, and an equipment control system. One end of the oxygen supply branch pipe is connected to the oxygen supply loop pipe, and the other end is connected to the inlet end of the pulse box. The pulse box is the core device for pulse generation, internally equipped with pulse generation components and a proprietary valve for high-speed opening and closing. One end of the pulse pipeline is sealed to the output end of the pulse box, and the other end is sealed to the pulse lance. The pulse lance is adapted to be inserted into the blast furnace tuyeres assembly. The equipment control system is electrically connected to the pulse box and used to regulate the pulse generation frequency and pulse pressure. This application effectively eliminates residual carbon accumulation in the blast furnace tuyeres swirling zone and the lower part of the furnace, optimizes the flow field distribution inside the furnace, and improves the blast furnace smelting efficiency and furnace condition stability.

This invention discloses a method for producing ceramsite using steam preheating of a coal gangue mixture, belonging to the field of solid waste resource utilization and ceramsite preparation technology. It addresses the problem of uneven heating of the coal gangue mixture caused by existing hot air preheating methods, leading to cracking of the ceramsite green body, insufficient expansion, and residual carbon. The invention involves crushing, grinding, and sieving the coal gangue to obtain fine powder; dry mixing the fine coal gangue powder with water glass and sodium carboxymethyl cellulose to obtain a first mixture; introducing superheated steam into the first mixture and preheating it to 75℃-80℃ to obtain a second mixture; mixing the second mixture with silicon carbide and dolomite powder to obtain a third mixture; pelletizing to obtain green pellets; and calcining to obtain ceramsite. This invention utilizes highly efficient and uniform preheating with superheated steam, and the steam condensate participates in the hydrolysis of water glass to form a gel network, giving the green pellets high strength and plasticity. The ceramsite structure is uniform after calcination. It is mainly used in the fields of lightweight building aggregates, thermal insulation materials, or water treatment filter media.

This invention relates to a coal-based reduction method for iron ore magnetization roasting in a vertical shaft furnace. Addressing the limitation that existing iron ore magnetization roasting vertical shaft furnaces can only use gaseous reducing agents, this invention enables iron ore magnetization roasting in the vertical shaft furnace without the use of gaseous reducing agents. The process and apparatus are as follows: A pulverized coal injection device is added outside the existing vertical shaft furnace reduction zone. Part of the flue gas discharged from the vertical shaft furnace is used as the injection gas. High-volatile pulverized coal is injected into the reduction zone of the vertical shaft furnace using the pulverized coal injection device. After the pulverized coal is heated in the furnace, it undergoes high-temperature pyrolysis. Simultaneously, the residual carbon produced after pyrolysis reacts with CO2 in the flue gas to generate a reducing gas containing H2 and CO. After the iron ore is added from the top of the vertical shaft furnace, it passes through the drying preheating zone and the heating zone in sequence, raising the temperature to over 500°C. The hematite and limonite contained in the iron ore come into contact with the reducing gas, achieving iron ore magnetization roasting in the vertical shaft furnace without the use of reducing gas.

The present application relates to the technical field of steel metallurgical process optimization, and particularly relates to a blast furnace coal injection coal powder comprehensive performance evaluation method and system based on combustion and reaction kinetics, comprising preparing a standard residual carbon sample, performing a combustion experiment and collecting data, calculating the dynamic burnout rate of the blast furnace coal injection coal powder, calculating the reactivity of the residual carbon of the blast furnace coal injection coal powder, calculating the coal ash behavior index for evaluating the harm degree of the coal ash to blast furnace smelting, establishing a model about the dynamic burnout rate, the reactivity of the residual carbon and the coal ash behavior index, and calculating the comprehensive performance index CPI for evaluating the blast furnace coal injection coal powder; the present application obtains key indexes such as the dynamic burnout rate and the residual carbon reactivity by simulating the extreme working condition of the blast furnace tuyere, breaks through the limitation of traditional indexes, deeply fuses and quantifies the physical properties (melting property) of the coal ash and the chemical harm of key chemical components, and forms a comprehensive index capable of directly and comprehensively warning the operation risk of the coal ash to the blast furnace.

This invention belongs to the field of iron and steel metallurgical production technology, and particularly relates to a closed-loop control method for FeO content in sintered ore based on multi-source information collaboration. The specific steps are as follows: S1: Feedforward sensing and dynamic benchmark calculation: Real-time acquisition and input of iron grade, chemical composition, and fixed carbon content data of the homogenized ore in the mixture, as well as the circulation volume and residual carbon content data of the returned ore; a time-series smoothing algorithm is used to process the homogenized ore carbon data to predict its short-term trend; S2: Dual carbon source collaborative regulation: Setting the target FeO content of the sintered ore and the corresponding target total carbon demand according to the process requirements, and calculating the real-time set value of the external fuel carbon according to the compensation formula; S3: Multi-temperature information fusion and feedback verification. This method, through feedforward compensation of core disturbances and combined with multi-dimensional feedback, comprehensively diagnoses the thermal state of the sintering process and the sensible heat of the finished sintered ore, achieving precise fuel supply, reducing solid fuel consumption, reducing the standard deviation of FeO content in the sintered ore, and improving the internal control hit rate.

The application discloses a kind of carbonaceous reducing agent dosage regulation and control methods for vanadium-titanium magnetite deep reduction, by analyzing the composition characteristics of vanadium-titanium magnetite and flux to be reduced, and based on the selection of slag type system coupled with the change of vanadium-titanium magnetite metallization rate, on the basis of considering the oxide and residual carbon residue in product, focus on the correction coefficient of theoretical carbon content required by electric furnace smelting of multi-factor influence is defined, and then a more accurate electric furnace smelting reducing agent dosage composite prediction model is constructed, which can more accurately match the process requirements on site through the prediction model, and then ensure the efficient use of carbon resources in the smelting stage and protect product quality, reduce energy consumption and carbon emission per ton of iron, help to achieve the double carbon goal. The method of the application is simple to operate, easy to flexibly regulate and control, can cover and be suitable for most vanadium-titanium magnetite electric furnace deep reduction smelting conditions, has strong adaptability, and is easy to large-scale practice, popularization and application.

The present application belongs to the technical field of slag recycling, and particularly relates to a method for recovering rare earth elements from slag based on microwave irradiation assisted crushing, which comprises the following steps: crushing the slag to a particle size of <20 mm for the first time, performing microwave irradiation treatment to generate thermal stress at the mineral interface and form microcracks along the interface; crushing to a particle size of <3 mm for the second time, performing screening classification and magnetic separation to obtain decarburized crushed slag; and performing acid leaching to separate and obtain rare earth enrichment. The present application can crush the slag to a particle size controllable for microwave irradiation, use residual carbon in the slag as a microwave absorption medium, make the residual carbon and rare earth enrichment in the slag preferentially heat up, generate a temperature difference between the residual carbon and rare earth elements and silicate, thereby generating thermal stress at the mineral interface and forming cracks, and in the subsequent fine crushing process, the energy preferentially releases along the interface, so that the subsequent crushing process can reduce energy consumption, and the rare earth and minerals can be effectively dissociated, thereby improving the rare earth leaching rate.

This invention relates to the field of solid waste utilization, and more particularly to a conditioning agent, its preparation method, and its application in the preparation of aluminosilicate porous ceramics. The conditioning agent comprises the following raw materials: aluminum smelting slag flue ash, nonionic water-soluble polymer, and polyacrylate. This invention uses aluminum smelting flue ash as a conditioning agent for aluminosilicate porous ceramics. Through a thermo-chemical-structural synergistic transformation mechanism, it innovatively retains and regulates the Al2O3-SiO2-F-Cl-K-Na-Ca multi-component system while simultaneously achieving the internal fuel utilization of residual carbon and the directional activation of the fluorine-chloride salt pore-forming agent function. Through high-temperature aluminosilicate reconstruction reaction and gas-solid-liquid multiphase interface engineering optimization, the above components react in situ within the range of 1000-1300℃ to generate mullite, anorthite, and potassium-sodium feldspar-based low-melting-point compounds, which are transformed into ceramic reinforcing phases, high-temperature bonding phases, and in-situ pore-forming sources, thus achieving the reconstruction of the formulation system.

This invention relates to the field of hydrometallurgical technology and discloses a low-cost lithium leaching process and a high-efficiency lithium resource extraction process for overhaul slag. The process involves coarsely crushing the overhaul slag and using residual carbon to assist in roasting and decyanation; then adding lithium extraction mother liquor and a colloidal inhibitor composite additive, and leaching under weak acidity and high ionic strength to inhibit the acid hydrolysis and gelation of silicon and aluminum components; next, adding ammonium salt and water to the filter residue and heating for leaching, controlling the redox potential within a fixed range by adjusting the oxygen-containing gas flow rate to suppress the low valence states of iron and manganese impurities and prevent secondary flocs from adsorbing lithium ions; combining the two leaching solutions, adding sodium fluoride seed crystals to induce crystallization and performing solid-liquid separation; the filtrate is then graded through an evaporation system to precipitate high-purity sodium fluoride and lithium salt products, and the mother liquor is recycled; the tailings are washed with hot water and discharged harmlessly. This invention solves the problem of low lithium recovery rate caused by silicon-aluminum gel encapsulation and impurity co-precipitation, achieving high-efficiency extraction of lithium resources from overhaul slag and safe disposal of tailings.

The present application relates to coal gasification ash sorting device technical field, and disclose a kind of coal gasification ash residual carbon and carbon ash sorting device, including working mechanism, the upper side of working mechanism is provided with the compression mechanism that can be compressed, the upper side of working mechanism is provided with the movable material mechanism corresponding compression mechanism position, the upper side of material mechanism is provided with the sorting mechanism that can be sorted, the both sides of material mechanism are symmetrically provided with the auxiliary mechanism that can be telescopic;Working mechanism includes workbench, material table and forming cavity, the upper side of workbench is provided with movable flap and lower die plate.The first guide plate is reset in the present application to close the through slot, material box returns to original position, upper die plate is pushed down by hydraulic assembly, residual carbon particles in forming cavity are pressed into shape under the cooperation of upper die plate and lower die plate, and upper die plate is reset, so that the residual carbon particles of sorting can be continuously fed, fed, pressed into block and discharged, so that subsequent recycling of residual carbon is facilitated.

The present application belongs to the technical field of sintering, aiming at the problem of more residual carbon on the material surface after existing sintering ignition, which leads to more return ore, ring cooler material sticking and increased energy consumption, etc., the present application discloses a kind of low residual carbon sintering method and system, according to the fluctuation change of the physicochemical properties of sintering mixture, the ignition intensity is regulated to ensure the stability of ignition, and further calculate the residual carbon content of sintering mixture under the ignition intensity, according to the different residual carbon content, respectively take the way of adding separate oxygen injection combustion or two stage ignition treatment to reduce even burn out the residual carbon in sintering mixture, and then basically convert the residual carbon into the heat required for sintering, reduce the energy consumption, reduce the return ore rate and avoid the phenomenon of ring cooler material sticking. In addition, it also has the advantages of low investment and operation cost, good market prospect, etc.

Embodiments presented provide for a method and apparatus for downhole tracer technology. In specific embodiments, different tracers may be placed into an injection well and amounts of residual carbon dioxide saturation may be determined.