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Economic grade evaluation method for schreyerite

An evaluation method, the technology of vanadium-titanium ore, applied in the field of metallurgy, can solve problems that are not necessarily reasonable, and achieve the effect of accurate and reasonable evaluation

Pending Publication Date: 2022-07-05
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When evaluating the beneficiation, sintering, and blast furnace processes, the model takes into account the changes in manufacturing costs and energy values ​​of each process. As the grade of iron ore concentrate increases, the technical and economic indicators of the beneficiation, sintering, and blast furnace processes will have a greater impact However, these changes are based on practical experience or laboratory research results, and there may be places where actual production does not match. Therefore, using this model first considers changes in ore prices, which may not be reasonable, and at the same time considers manufacturing in the process. Cost change function, etc. The determination of this function is relatively complicated, but the unit price of different grades of iron concentrate, the change of pig iron cost, and the change of pig iron scale are affected by the market environment, and are also affected by different smelting boundary conditions. Limitations, not suitable for economic grade evaluation of vanadium-titanium ore

Method used

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  • Economic grade evaluation method for schreyerite
  • Economic grade evaluation method for schreyerite
  • Economic grade evaluation method for schreyerite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] The process of evaluating the economic grade of vanadium-titanium ore is as follows:

[0081] (1) According to the theoretical batching calculation and statistical results, under the condition that TFe is 48-53%, calculate the amount of slag G according to formula 1 slg ; When the incoming grade TFe of vanadium-titanium ore is 51%, the amount of slag G slg =-37.05*51+2485=595.45kg / tp;

[0082] (2) According to the amount of slag, calculate the TiO into the furnace according to formula 2 2 load G TiO2 ;

[0083]

[0084] (3) According to the furnace grade TFe of vanadium-titanium ore, calculate the unit ore consumption G according to formula 3 ore ;

[0085]

[0086] (4) According to the unit ore consumption and the set burden structure ratio, calculate the unit consumption G of lump ore according to formula 4 kk , calculate the pellet unit consumption G according to formula 5 qt , according to formula 6 to calculate the unit consumption G of sinter st ;

...

Embodiment 2

[0116] Economic evaluation of 56 vanadium-titanium ore at different grades in a certain place.

[0117] According to the same method as in Example 1, the economic evaluation results of 56 vanadium-titanium ore after being graded are shown in Table 3 below.

[0118] Table 3: Influence of resources, prices, and different grades of vanadium-titanium ore on the increase of 1% TFe (unit: yuan / t)

[0119] 56 vanadium titanite 57 Vanadium Titanite 58 vanadium titanite 59 Vanadium Titanite 60 vanadium titanite Sufficient resources - 2019 prices 0 22.1 27.5 23.4 20.6 Sufficient Resources - 2020 Prices 0 35.6 44.8 40.2 37.9 Insufficient resources - 2019 prices 0 7.7 10.7 11.7 8.2 Insufficient resources - 2020 prices 0 20.0 26.6 27.7 24.5

;

[0120] As can be seen from Table 3, when the ore resources are sufficient and the ore price is high, the price of 60 vanadium titanite 1% TFe has the largest increase; when the ore re...

Embodiment 3

[0122] Economic evaluation of 54 vanadium-titanium ore at different grades in a certain place.

[0123] According to the same method as in Example 1, the economical evaluation results of the grade 54 vanadium-titanium ore are shown in Table 4 below.

[0124] Table 4: As can be seen from the table, the influence of resources, prices, and different grades of Midi ore on the price increase of 1% TFe (unit: yuan / t)

[0125]

[0126]

[0127] It can be seen from Table 4 that when the ore resources are sufficient and the ore price is high, the price increase of 55.0 vanadium titanite 1% TFe is the largest; when the ore resources are insufficient and the ore price is low, 54.0 Vanadium-titanium 1% TFe has the lowest price increase. In the case of insufficient ore resources and high ore prices, the price increase of 54.5 vanadium-titanium 1% TFe is the second highest. It can be seen from the above analysis that as the TFe grade of the vanadium-titanium ore increases, under the...

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Abstract

The invention belongs to the technical field of metallurgy, and particularly discloses a method capable of accurately and reasonably evaluating the economic grade of schreyerite. According to the method, on the basis of schreyerite sintering and blast furnace element balance, different schreyerite grades (according to the reference price) are input, and under the same schreyerite sintering and blast furnace smelting boundary conditions, such as the charging grade, the slag alkalinity, the slag TiO2 content and the pellet proportion, the pellet content of the schreyerite is increased; according to the method, the price increase range of the schreyerite grade corresponding to the first grade as the benchmark when the pig iron cost is equal is calculated, the influence of smelting boundary conditions is fully considered in the whole process, modeling calculation is carried out basically by adopting actual production data, and therefore the schreyerite economic grade can be evaluated more accurately and reasonably.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a method for evaluating the economic grade of vanadium-titanium ore. Background technique [0002] At present, there have been models for evaluating the reasonable grade of iron ore, for example: the literature "Research on the Reasonable Grade of Iron Concentrate", Cai Jiuju et al., "Steel" Vol. The sintering and blast furnace models are based on changes in the grade of iron concentrates, the grades of the beneficiation process, the sintering process, the energy value of the blast furnace process and the changes in processing costs, and use the changes in pig iron costs to evaluate the reasonable grade model of iron ore. When evaluating the beneficiation, sintering, and blast furnace processes, this model takes into account the changes in manufacturing costs and energy values ​​of each process. With the increase of the iron concentrate grade, the technical and eco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G16C60/00C22B1/24
CPCG06F30/20G16C60/00C22B1/2406Y02P90/30
Inventor 饶家庭陈福林胡鹏朱凤湘
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP