CN113355118A - Production method of iron coke for titanium slag smelting and iron coke - Google Patents
Production method of iron coke for titanium slag smelting and iron coke Download PDFInfo
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- CN113355118A CN113355118A CN202110626694.XA CN202110626694A CN113355118A CN 113355118 A CN113355118 A CN 113355118A CN 202110626694 A CN202110626694 A CN 202110626694A CN 113355118 A CN113355118 A CN 113355118A
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1218—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by dry processes
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- C22B5/00—General methods of reducing to metals
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Abstract
The invention relates to the technical field of titanium slag smelting, in particular to a production method of iron coke for titanium slag smelting and the iron coke. The method comprises the following steps: preparing a basic coal sample; mixing the fine-grained titanium concentrate serving as an additive with a basic coal sample in proportion to obtain a mixture; and feeding the mixture into a coking furnace and reacting at a preset bulk density to obtain the iron coke for titanium slag smelting. The ferro-coke for smelting the titanium slag prepared by the method has the characteristics of high reactivity, high smelting matching degree with the titanium slag and the like, wherein the high matching degree is mainly reflected in that iron in the ferro-coke is easier to generate iron phase nucleation with minerals, so that the ferro-coke is beneficial to separating slag and iron, and the titanium in the ferro-coke and the slag and iron are beneficial to improving the grade of the titanium slag; in addition, because the existing titanium slag smelting process is difficult to utilize the excessively fine titanium concentrate particles (including titanium concentrate powder), the invention can fully utilize the titanium concentrate with fine granularity as the additive, thereby improving the utilization rate of titanium concentrate resources.
Description
Technical Field
The invention relates to the technical field of titanium slag smelting, in particular to a production method of iron coke for titanium slag smelting and the iron coke.
Background
The titanium slag products produced by the electric furnace smelting method account for more than 70 percent of the world titanium-rich raw material yield, and are widely applied to titanium industries such as sulfuric acid method titanium white, sponge titanium, chloride method titanium white and the like. The main raw materials for smelting the titanium slag by the electric furnace comprise titanium concentrate and a reducing agent, and the reducing agent for smelting the acid-soluble titanium slag by the electric furnace is mainly coke from the aspect of economic balance of the raw materials and products. If a reducing agent (coke) is not suitable in the acid-soluble titanium slag smelting process, a series of problems such as increase of carbon content, higher power consumption per ton material, lower grade of titanium slag, higher flue gas temperature, lower molten iron temperature and the like are easily caused. Therefore, the technical level of the coke for the titanium slag is improved, and the coke has great significance for optimizing the titanium slag smelting process and improving the quality of titanium slag products.
At present, coke used for smelting acid-soluble titanium slag by an electric furnace is mainly conventional metallurgical coke. The conventional metallurgical coke has the characteristics of high mechanical strength, high strength after reaction, low reactivity and the like, but the performance characteristics of the conventional metallurgical coke are mainly required by the blast furnace coke, and the coke for the titanium slag needs to give emphasis on high reactivity, proper granularity (generally in the range of 1-13 mm) and the like, so that the conventional metallurgical coke has obvious defects in titanium slag smelting. The ferro coke, as a functional coke with high reactivity, has obvious advantages in titanium slag smelting. Mainly comprises the following steps: iron in the iron coke can form a metallic iron phase, fayalite and hercynite with minerals to serve as an iron phase nucleating agent, so that the nucleation barrier of metallic iron is reduced, iron particles in slag are promoted to grow, the generation of a slag-iron interface is facilitated, and the separation of slag and iron is promoted; the iron can promote the reactivity of the coke and accelerate the reaction of active sites on the carbon microcrystal structure in the coke and titanium oxide in the titanium concentrate, thereby shortening the smelting period. However, the existing ferro-coke research is mainly aimed at blast furnace smelting, and the matching degree of the ferro-coke research with titanium slag smelting is not high; in addition, with the continuous exploitation of high-quality ore sources, the yield of coarse-grained titanium concentrate is gradually difficult to meet the production requirement of titanium slag smelting.
Disclosure of Invention
In order to solve the technical problems mentioned in the background art, the invention provides a method for producing ferro-coke for titanium slag smelting, which comprises the following steps: preparing a basic coal sample; mixing the fine-grained titanium concentrate serving as an additive with the basic coal sample in proportion to obtain a mixture; and feeding the mixture into a coking furnace and reacting at a preset bulk density to obtain the iron coke for titanium slag smelting.
In one or more embodiments, the fine-grained titanium concentrate comprises the following components in percentage by mass: 40-50% of TiO2, 20-30% of FeO, 3-8% of Fe2O3, and 7-10% of the fine-grained titanium concentrate serving as an additive and the basic coal sample.
In one or more embodiments, the fine particle size fraction titanium concentrate has a particle size of less than 325 mesh.
In one or more embodiments, the base coal sample is prepared via a plurality of coking coal crushing mixes having different thermoplasticities.
In one or more embodiments, the plurality of coking coals have a thermoplastic range of 10 ℃ to 100 ℃.
In one or more embodiments, the number of the coking coals is 3, and the thermoplastic interval and the mixing ratio by mass of each coking coal are as follows:
the first coking coal is mixed at the temperature of 70-100 ℃ in a thermoplastic interval in a proportion of 10-25%;
the second coking coal has a thermoplastic interval of 40-70 ℃ and a mixing proportion of 30-50%;
the thermoplastic interval of the third coking coal is 10-40 ℃, and the mixing proportion is 25-60%.
In one or more embodiments, the mass percent of water in the base coal sample is 3-5%; in the process of preparing the base coal sample, when the moisture content in the raw coal sample of the base coal sample is high, drying the raw coal sample, and if the moisture content is low, adding moisture to the raw coal sample; wherein the raw coal sample is various coking coals.
In one or more embodiments, the mixture is reacted in the coke oven at a bulk density of 0.5 to 0.6t/m 3.
In one or more embodiments, the obtaining of the ferro-coke for titanium slag smelting after feeding the mixture into a coking furnace and reacting at a preset bulk density comprises: and (3) in a coking furnace, heating the temperature of the mixture to 300 ℃ at a heating rate of 30 ℃/min, heating the temperature of the mixture to 500 ℃ at a heating rate of 4-6 ℃/min, heating the temperature of the mixture to 900 ℃ at 30 ℃/min, reacting at a constant temperature for 2-3 h, and cooling at normal temperature to obtain the iron coke for smelting the titanium slag.
In another aspect of the invention, the ferro-coke is prepared by the production method of the ferro-coke for titanium slag smelting in any one of the embodiments.
The beneficial effects of the invention include: the ferro-coke for smelting the titanium slag prepared by the method has the characteristics of high reactivity, high smelting matching degree with the titanium slag and the like, wherein the high matching degree is mainly reflected in that iron in the ferro-coke is easier to generate iron phase nucleation with minerals, so that the ferro-coke is beneficial to separating slag and iron, and the titanium in the ferro-coke and the slag and iron are beneficial to improving the grade of the titanium slag; in addition, because the existing titanium slag smelting process is difficult to utilize the excessively fine titanium concentrate particles (including titanium concentrate powder), resource waste is caused to a certain extent, and in the method, the fine titanium concentrate particles (including the titanium concentrate powder) can be fully utilized by taking the fine-grained titanium concentrate as the additive, so that the utilization rate of the titanium concentrate resource can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
FIG. 1 is a schematic block diagram of the process flow of the production method of ferro-coke for titanium slag smelting.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
In order to prepare the ferro-coke more suitable for titanium slag smelting, the invention provides the production method of the ferro-coke for titanium slag smelting, the ferro-coke prepared by the method has the characteristics of high reactivity, high smelting matching degree with titanium slag and the like, the carbon blending amount, the ton material power consumption and the flue gas temperature in the smelting process can be effectively reduced, and the grade of the titanium slag and the molten iron temperature are improved. The method of the present invention will be described in detail below with reference to the accompanying drawings.
FIG. 1 is a schematic block diagram of the process flow of the production method of ferro-coke for titanium slag smelting. As shown in FIG. 1, the method for producing ferro-coke for titanium slag smelting according to the embodiment includes: step S1, preparing a basic coal sample; step S2, mixing the fine-grained titanium concentrate serving as an additive with a basic coal sample in proportion to obtain a mixture; and step S3, feeding the mixture into a coking furnace, and reacting at a preset bulk density to obtain the iron coke for titanium slag smelting. The iron coke prepared by the method has high reactivity, and when the iron coke is applied to titanium slag smelting, iron in the iron coke is easy to nucleate with iron phase of minerals, so that the iron slag separation is facilitated, and the grade of the titanium slag is promoted no matter whether the iron slag is separated or the titanium in the iron coke is separated; in addition, because the existing titanium slag smelting process is difficult to utilize the excessively fine titanium concentrate particles (including titanium concentrate powder), resource waste is caused to a certain extent, and in the method, the fine titanium concentrate particles (including the titanium concentrate powder) can be fully utilized by taking the fine-grained titanium concentrate as the additive, so that the utilization rate of the titanium concentrate resource can be improved.
In further implementation, the fine particle size grade titanium concentrate comprises the following components, by mass, 40-50% of TiO2, 20-30% of FeO, 3-8% of Fe2O3, and the mixing proportion of the fine particle size grade titanium concentrate serving as an additive and a base coal sample is 7-10%. Wherein, the higher the content of each component in the titanium concentrate with micro-fine particle size is, the lower the mixing proportion is; the particle size of the fine particle size grade titanium concentrate is optionally equal to 325 mesh, preferably less than 325 mesh.
In a further implementation, the base coal sample is prepared by crushing and mixing a plurality of coking coals with different thermoplasticity, and the thermoplastic range of the coking coals with different thermoplasticity is 10-100 ℃.
In a preferred embodiment, 3 kinds of thermoplastic interval coking coals are mixed, and the thermoplastic interval and the mixing ratio by mass of each coking coal are as follows: the first coking coal is mixed at the temperature of 70-100 ℃ in a thermoplastic interval in a proportion of 10-25%; the second coking coal has a thermoplastic interval of 40-70 ℃ and a mixing proportion of 30-50%; the thermoplastic interval of the third coking coal is 10-40 ℃, and the mixing proportion is 25-60%. Wherein, different thermoplastic intervals represent that the coking coal has different moisture content, volatile content, fixed carbon content, ash content and the like. The different thermoplastic intervals and mixing proportions affect the reactivity, granularity, strength after reaction, specific surface area and other parameters of the ferro-coke for smelting titanium slag generated by the method.
In further implementation, in the process of preparing the ferro-coke for smelting titanium slag, the moisture content of the raw coal sample of the basic coal sample is required, and the moisture mass percentage of the raw coal sample of the basic coal sample is required to be 3-5%; therefore, in the process of preparing the base coal sample, when the moisture content in the raw coal sample of the base coal sample is high, the raw coal sample is dried, and if the moisture content is low, moisture is added to the raw coal sample; wherein, the raw coal sample is coking coal with different thermoplastic intervals.
In a further embodiment, when a mixture obtained by mixing the prepared base coal sample and the fine particle size grade titanium concentrate serving as the additive in proportion is placed into a coking furnace, the density of the mixture is required to be 0.5-0.6t/m3 so as to enable the mixture to react fully. The reaction process comprises the steps of heating the mixture to 300 ℃ at the heating rate of 30 ℃/min, heating the mixture to 500 ℃ at the heating rate of 4-6 ℃/min, heating the mixture to 900 ℃ at the temperature of 30 ℃/min, reacting at constant temperature for 2-3 h, and cooling at normal temperature to obtain the iron coke for smelting the titanium slag.
In the above embodiments, only some key steps of the method of the present invention are illustrated, and for the convenience of those skilled in the art, the relatively complete process flow of the method of the present invention will be described by using a specific embodiment.
Example 1
The first step is as follows: selecting coking coals with differences (thermoplastic intervals are 10-100 ℃) in the three thermoplastic intervals, and crushing the coking coals respectively to be used as raw coal samples;
the second step is that: regulating and controlling the water content in the raw coal sample to be within the range of 3-5%, drying the raw coal sample if the water content in the raw coal sample is high, and adding water if the water content is low;
the third step: mixing three raw coal samples with controlled moisture in a mixer to obtain a mixed basic coal sample, wherein the mixture ratio of the mixed raw coal sample is as follows according to the difference of the thermoplastic intervals of the coal sample: the raw coal sample addition amount in the thermoplastic range of 70-100 ℃ is 10-25%, the raw coal sample addition amount in the thermoplastic range of 50-70 ℃ is 30-50%, and the raw coal sample addition amount in the thermoplastic range of 10-40 ℃ is 25-60%;
the fourth step: screening the titanium concentrate, and selecting the superfine-particle-size titanium concentrate with the particle size smaller than 325 meshes as an iron coke preparation additive, wherein the content of TiO2 in the superfine-particle-size titanium concentrate is 40-50%, the content of FeO is 20-30%, and the content of Fe2O3 is 3-8%; wherein, the content specifically refers to mass percentage; then drying the titanium ore concentrate, uniformly mixing the dried titanium ore concentrate with a mixed coal sample in a mixer, and then putting the mixture into a coking reactor for tamping, wherein the adding amount of the fine-particle-fraction titanium concentrate is 7-10%; the bulk density of the mixture of the coking coal and the titanium concentrate in the coking reactor is 0.5-0.6t/m 3;
the fifth step: and (3) placing the coking reactor in the center of a hearth of a coke oven, heating the mixture to 300 ℃ at the heating rate of 30 ℃/min, heating the mixture to 500 ℃ at the heating rate of 4-6 ℃/min, heating to 900 ℃ at 30 ℃/min, coking for 2-3 h at constant temperature, taking out the coking reactor, and cooling at normal temperature to obtain the iron coke for titanium slag smelting.
The process flow of the method of the present invention is relatively fully illustrated in example 1 above, and in order to further illustrate the effect of fine particle size grade titanium concentrate as an additive in the method of the present invention, it will be demonstrated by comparing the experimental results of example 2 and example 3. Wherein, the adding amount of the titanium concentrate of the superfine fraction is only adjusted in the embodiment 2 and the embodiment 3, and the specific steps and results of the embodiment 2 and the embodiment 3 are as follows:
example 2
Selecting three coal samples with different thermoplastic intervals (specific industrial analysis and thermoplastic characteristics are shown in table 1), wherein the thermoplasticity of a coal sample A is 99 ℃, the thermoplasticity of a coal sample B is 62 ℃, and the thermoplasticity of a coal sample C is 30 ℃, and respectively crushing the coal samples to serve as raw coal samples; adding water to the water content of the three coking coals to be 4 percent according to the existing industrial analysis parameters of the coal sample; uniformly mixing three raw coal samples in a mixer according to the size of a thermoplastic interval to obtain a basic coal sample, wherein the mixing ratio of the three raw coal samples is as follows: coal A-20%, coal B-40%, coal C-40%; screening titanium concentrates (the components are shown in table 2), selecting superfine-fraction titanium concentrates with the granularity smaller than 325 meshes as additives for preparing iron coke, drying the additives, uniformly mixing the additives with a mixed coal sample in a mixer, and putting the mixture into a coking reactor for tamping, wherein the adding amount of the superfine-fraction titanium concentrates is 10%, and the bulk density of the mixture of coal and titanium concentrates in the coking reactor is 0.55t/m 3; and (3) placing the coking reactor in the center of a hearth of a coke oven, raising the temperature of the coal sample to 300 ℃ at a temperature rise rate of 30 ℃/min, raising the temperature of the coal sample to 500 ℃ at a temperature rise rate of 5 ℃/min, raising the temperature to 900 ℃ at 30 ℃/min, coking for a constant temperature for 2.5 hours, taking out the coking reactor, and cooling at normal temperature to obtain the iron coke for smelting the titanium slag (the performance structure is shown in table 3).
TABLE 1 Industrial analysis and thermoplastic characterization of coal samples
Wherein, each unit means: ad: an air drying base; and (6) daf: drying the ashless base; d: and (5) drying the base.
TABLE 2 titanium concentrate principal Components index%
TABLE 3 Performance and Structure indexes of ferro-coke for titanium slag smelting
Example 3
Selecting three coal samples with different thermoplastic intervals (specific industrial analysis and thermoplastic characteristics are shown in table 1), wherein the thermoplasticity of a coal sample A is 99 ℃, the thermoplasticity of a coal sample B is 62 ℃, and the thermoplasticity of a coal sample C is 30 ℃, and respectively crushing the coal samples to serve as raw coal samples; adding water to the water content of the three coking coals to be 4 percent according to the existing industrial analysis parameters of the coal sample; uniformly mixing three raw coal samples in a mixer according to the size of a thermoplastic interval to obtain a basic coal sample, wherein the mixing ratio of the three raw coal samples is as follows: coal A-20%, coal B-40%, coal C-40%; screening titanium concentrates (the components are shown in table 2), selecting superfine-fraction titanium concentrates with the granularity smaller than 325 meshes as iron coke preparation additives, drying the iron coke preparation additives, uniformly mixing the dried iron coke preparation additives with a mixed coal sample in a mixer, and then putting the mixture into a coking reactor for tamping, wherein the adding amount of the superfine-fraction titanium concentrates is 7%, and the bulk density of the mixture of coal and titanium concentrates in the coking reactor is 0.55t/m 3; and (3) placing the coking reactor in the center of a hearth of a coke oven, raising the temperature of the coal sample to 300 ℃ at a temperature rise rate of 30 ℃/min, raising the temperature of the coal sample to 500 ℃ at a temperature rise rate of 5 ℃/min, raising the temperature to 900 ℃ at 30 ℃/min, coking for a constant temperature for 2.5 hours, taking out the coking reactor, and cooling at normal temperature to obtain the iron coke for smelting the titanium slag (the performance structure is shown in table 4).
TABLE 4 Performance Structure indices of ferro-coke for titanium slag smelting
From a comparison of tables 3 and 4, it can be seen that the amount of added fine fraction titanium concentrate as an additive is slightly changed, i.e. the overall properties of the finally obtained ferro-coke will be significantly affected. The ferro-coke suitable for smelting titanium slag of different titanium concentrates can be obtained by adjusting the adding component of the titanium concentrate with micro-fine particle fraction.
Experiments prove that the iron coke for smelting the titanium slag prepared by the method has good reactivity, is beneficial to improving the reduction rate of titanium concentrate, and promotes the iron phase nucleation and slag iron separation in the smelting process of the titanium slag; meanwhile, the additive is the superfine-particle-grade titanium concentrate, so that the high-efficiency utilization of the superfine-particle-grade titanium concentrate can be realized; and compared with the traditional coking process, the coking temperature is low, the coking time is short, and the method is greatly beneficial to saving energy, reducing consumption and improving the smelting level of the titanium slag.
In the above embodiments, a part of the fine-grained ilmenite concentrate powder may be obtained by screening, and in addition, the waste fine ilmenite concentrate particles and ore powder may be further crushed.
In another aspect of the invention, the ferro-coke is also provided, and the ferro-coke is prepared by the production method of the ferro-coke for titanium slag smelting in the above embodiments. The method has the advantages of good reactivity, contribution to improving the reduction rate of the titanium concentrate, promotion of iron phase nucleation and slag iron separation in the titanium slag smelting process, and the like.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.
The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. The production method of the ferro-coke for titanium slag smelting is characterized by comprising the following steps:
preparing a basic coal sample;
mixing the fine-grained titanium concentrate serving as an additive with the basic coal sample in proportion to obtain a mixture;
and feeding the mixture into a coking furnace and reacting at a preset bulk density to obtain the iron coke for titanium slag smelting.
2. As in claimThe production method of the ferro-coke for titanium slag smelting, according to claim 1, is characterized in that the fine-grained titanium concentrate comprises the following components in percentage by mass: TiO2240-50% of FeO, 20-30% of Fe2O3The content of the fine-grained titanium concentrate is 3-8%, and the mixing proportion of the fine-grained titanium concentrate serving as an additive and the basic coal sample is 7-10%.
3. The method for producing ferro-coke for titanium slag smelting according to claim 2, wherein the fine particle size fraction titanium concentrate has a particle size of less than 325 mesh.
4. The method for producing ferro-coke for titanium slag smelting according to claim 1, wherein the base coal sample is prepared by crushing and mixing a plurality of types of coking coals having different thermoplasticities.
5. The method for producing ferro-coke for titanium slag smelting according to claim 4, wherein the thermoplastic range of the coking coals is 10-100 ℃.
6. The method for producing ferro-coke for titanium slag smelting according to claim 5, wherein the plurality of types of coking coals are 3 types, and the thermoplastic interval and the mixing ratio by mass of each type of coking coal are, in order:
the first coking coal is mixed at the temperature of 70-100 ℃ in a thermoplastic interval in a proportion of 10-25%;
the second coking coal has a thermoplastic interval of 40-70 ℃ and a mixing proportion of 30-50%;
the thermoplastic interval of the third coking coal is 10-40 ℃, and the mixing proportion is 25-60%.
7. The method for producing ferro-coke for titanium slag smelting according to claim 1 or 4, wherein the mass percentage of water in the basic coal sample is 3-5%; in the process of preparing the base coal sample, when the moisture content in the raw coal sample of the base coal sample is high, drying the raw coal sample, and if the moisture content is low, adding moisture to the raw coal sample; wherein the raw coal sample is various coking coals.
8. The method for producing ferro-coke for titanium slag smelting according to claim 1, wherein the bulk density of the reaction of the mixture in the coke oven is 0.5 to 0.6t/m3。
9. The method for producing ferro-coke for titanium slag smelting according to claim 8, wherein the obtaining of ferro-coke for titanium slag smelting after the mixture is fed into a coke oven and reacted at a preset bulk density comprises:
and (3) in a coking furnace, heating the temperature of the mixture to 300 ℃ at a heating rate of 30 ℃/min, heating the temperature of the mixture to 500 ℃ at a heating rate of 4-6 ℃/min, heating the temperature of the mixture to 900 ℃ at 30 ℃/min, reacting at a constant temperature for 2-3 h, and cooling at normal temperature to obtain the iron coke for smelting the titanium slag.
10. Ferro coke, characterized in that it is obtained by a method for producing ferro coke for titanium slag smelting according to any one of the preceding claims 1 to 9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2023152271A (en) * | 2022-04-02 | 2023-10-16 | 重慶大学 | Iron titanium composite coke for low carbon steelmaking and manufacturing method thereof |
| JP7526379B2 (en) | 2022-04-02 | 2024-08-01 | 重慶大学 | Iron-titanium composite coke for low carbon steelmaking and its manufacturing method |
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