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Automatic batching method for mineral powder production based on vanadium-titanium slag component characteristics and application

A technology for vanadium-titanium slag and slag powder, applied in the field of building materials, can solve the problems of difficulty in meeting the activity requirements of S75 grade slag powder, poor use effect, long time consumption, etc. The effect of efficient prediction

Pending Publication Date: 2021-11-26
承德承金环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But due to its own TiO 2 The content is high and the activity is low, it is difficult to meet the activity requirements of S75 grade slag, and the effect of using it alone as an active admixture is not good. Therefore, the currently commonly used solution is to compound it with ordinary slag to prepare different activities. Grade mineral powder, so as to realize reuse as cement admixture or concrete admixture
[0005] However, in actual production, when vanadium-titanium slag is used instead of ordinary slag to prepare different grades of slag for concrete, it is necessary to carry out multiple sets of replacement amounts and at least 28 days of mortar activity tests. According to the activity index results obtained after the test To further judge whether the vanadium-titanium slag can be used to prepare slag, whether it can reach the required slag activity level and its suitable replacement amount, this process usually requires a lot of experimental work and takes a long time

Method used

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  • Automatic batching method for mineral powder production based on vanadium-titanium slag component characteristics and application
  • Automatic batching method for mineral powder production based on vanadium-titanium slag component characteristics and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] This embodiment provides a kind of method that utilizes different amounts of vanadium-titanium slag powder A to replace common slag to prepare slag, specifically as follows:

[0049] (1) Calculate the available CaO content according to the chemical composition data in Table 1:

[0050] Available CaO content = total CaO content in raw slag - 1.12 x total TiO in raw slag 2 Content = 26.83%

[0051] (2) The replacement amount of ordinary slag powder replaced by vanadium-titanium slag powder A is 20%, 50% and 80% respectively, according to the specific surface area and available CaO content of vanadium-titanium slag powder A in Table 1, according to the relationship model established respectively Calculate the 7-day activity index (A7) and 28-day activity index (A28) that it can achieve, and predict the activity level of the prepared mineral powder.

[0052] When the replacement amount of vanadium-titanium slag powder A is 20%,

[0053] A7=-18.620+0.649×(aCaO)-0.262×(P)+...

Embodiment 2

[0062] The present embodiment provides a kind of method that utilizes different amounts of vanadium-titanium slag powder B to replace common slag to prepare slag, specifically as follows:

[0063] (1) Calculate the available CaO content according to the chemical composition data in Table 1:

[0064] Available CaO content = total CaO content in raw slag - 1.12 x total TiO in raw slag 2 Content = 28.61%

[0065] (2) The replacement amount of ordinary slag powder replaced by vanadium-titanium slag powder B is 20%, 40% and 60% respectively, according to the specific surface area and available CaO content of vanadium-titanium slag powder B in Table 1, according to the relationship model established respectively Calculate the 7-day activity index (A7) and 28-day activity index (A28) that it can achieve, and predict the activity level of the prepared mineral powder.

[0066] When the replacement amount of vanadium-titanium slag powder B is 20%,

[0067] A7=-18.620+0.649×(aCaO)-0.2...

Embodiment 3

[0076] The present embodiment provides a kind of method that utilizes different amounts of vanadium-titanium slag powder C to replace common slag to prepare slag, specifically as follows:

[0077] (1) Calculate the available CaO content according to the chemical composition data in Table 1:

[0078] Available CaO content = total CaO content in raw slag - 1.12 x total TiO in raw slag 2 Content = 16.74%

[0079] (2) The replacement amount of vanadium-titanium slag powder C replacing common slag powder is 20%, 40% and 60% respectively, according to the specific surface area and available CaO content of vanadium-titanium slag powder C in Table 1, according to the relationship model established respectively Calculate the 7-day activity index (A7) and 28-day activity index (A28) that it can achieve, and predict the activity level of the prepared mineral powder.

[0080] When the vanadium-titanium slag powder C substitution amount is 20%,

[0081] A7=-18.620+0.649×(aCaO)-0.262×(P)...

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Abstract

The invention relates to the technical field of building materials, in particular to an automatic batching method for mineral powder production based on vanadium-titanium slag component characteristics and application. According to the batching method for mineral powder production based on the vanadium-titanium slag powder, the available CaO content of the vanadium-titanium slag powder serves as an index, and the quantitative relation between the available CaO content of the vanadium-titanium slag powder, the specific surface area S, the replacement amount P of the vanadium-titanium slag powder replacing the slag powder and the activity index A of the mineral powder is established. According to the batching method, the quality performance of the vanadium-titanium slag powder with different sources and components can be conveniently and effectively pre-judged, and the mineral powder meeting different performance grade requirements can be produced through batching by rapidly selecting the proper vanadium-titanium slag doping amount; and the workload of multiple tests after a certain vanadium-titanium slag is obtained in a traditional method and the waiting time of 28d mechanical property detection are saved, the consumption of personnel and material resources in the process of producing the mineral powder by using the vanadium-titanium slag ingredients is remarkably reduced, and the timeliness of mineral powder production is improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an automatic batching method for mineral powder production and its application based on the composition characteristics of vanadium-titanium slag. Background technique [0002] Vanadium-titanium slag refers to the waste slag produced during blast furnace ironmaking with vanadium-titanium magnetite as the main raw material. Usually, about 0.3-0.6 tons of slag is produced for every ton of iron produced, and the lower the grade of iron ore, the greater the amount of slag discharged. [0003] Compared with ordinary slag, TiO in vanadium-titanium slag 2 If the content is high, even if the method of quenching is adopted, a large amount of perovskite without hydraulic activity will still be generated, resulting in a high degree of polymerization of the vanadium-titanium slag glass body, low hydration activity, and poor grindability. The special nature of low hydration activ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20C04B18/14G06F119/02
CPCG06F30/20C04B18/144G06F2119/02Y02W30/91
Inventor 王肇嘉王卉崔素萍郑永超王亚丽陈旭峰王明威房桂明
Owner 承德承金环保科技有限公司
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