Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of compound auxiliary agent and its preparation method and application

A technology of composite additives and organic binders is applied in the preparation of composite additives, and the application field of vanadium titanomagnetite production sinter, which can solve the problems of low utilization coefficient, low vertical sintering speed, and small liquid phase amount. , to achieve the effect of promoting the formation of liquid phase, good economic benefits and improving yield

Active Publication Date: 2018-07-24
攀钢冶金材料有限责任公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Years of research and practice have shown that the sintering of vanadium-titanium iron concentrate has poor air permeability, low vertical sintering speed, and less liquid phase, resulting in poor sinter strength, low yield, high return rate, high energy consumption, and low utilization factor
For many years, we have been looking for composite additives that can significantly improve its sintering performance. Various additives have been tested, and the effects are different. Some have been used in production for a long time, but because of their high price, they are not economical. it is good

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of compound auxiliary agent and its preparation method and application
  • A kind of compound auxiliary agent and its preparation method and application
  • A kind of compound auxiliary agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0020] According to a preferred embodiment of the present invention, mixing is carried out as follows:

[0021] (1) At a rate of 50-100r / min, the first mixing is 3-5min;

[0022] (2) Then under the speed of 200-300r / min, the second mixing 2-3min;

[0023] (3) Finally, at the speed of 50-100r / min, the first mixing is 3-5min.

[0024] According to the method of the present invention, preferably based on the total weight of raw materials after mixing, the consumption of active lime powder is 75-90% by weight, the consumption of organic binder is 5-20% by weight, and the consumption of mineralizer is 0-10% by weight %, the consumption of additives is 0-5% by weight, preferably the consumption of active lime powder is 78-89% by weight, the consumption of organic binder is 5-10% by weight, and the consumption of mineralizer is 5-8% by weight, The additive is used in an amount of 1-4% by weight.

[0025] According to the method of the present invention, the indicators of the activ...

Embodiment 1

[0050] Containing 89wt% of active lime powder, 5wt% of organic binder, 5wt% of mineralizer, and 1wt% of additives were kneaded at a low speed of 50r / min for 3min on the mixer, and then kneaded at a high speed of 200r / min for 2min. Then mixed at a low speed of 50r / min for 3min to discharge the material, and the physical and chemical indicators of the obtained composite additives are shown in Table 1.

[0051] The active lime index is: 4.12wt% ignited reduction, 92.34wt% CaO content, 0.35wt% MgO content, SiO 2 The content is 0.13wt%, the proportion of particle size less than 0.088mm is 93wt%, and the activity is 385ml.

[0052] The index of the organic binder is: loss on ignition 24.50wt%, SiO 2 The content is 28.75wt%, Al 2 o 3 The content is 32.28wt%, the CaO content is 1.97wt%, the viscosity value is 32MPa.s, and the proportion of particle size less than 0.044mm is 94wt%.

[0053] The mineralizer is: boric acid, wherein the boric acid meets the corresponding index require...

Embodiment 2

[0056] Containing 85wt% of active lime powder, 8wt% of organic binder, 7wt% of mineralizer, and 2wt% of additives were kneaded at a low speed of 75r / min for 4min on the mixer, and then kneaded at a high speed of 250r / min for 3min. Then mixed at a low speed of 75r / min for 3min to discharge the material, and the physical and chemical indicators of the obtained composite additives are shown in Table 1.

[0057] The active lime index is: ignited reduction 5.26wt%, CaO content is 92.61wt%, MgO content is 0.23wt%, SiO 2 The content is 0.16wt%, the proportion of particle size less than 0.088mm is 94wt%, and the activity is 380ml.

[0058] The index of the organic binder is: loss on ignition 24.50wt%, SiO 2 The content is 28.75wt%, Al 2 o 3 The content is 32.28wt%, the CaO content is 1.97wt%, the viscosity value is 32MPa.s, and the ratio of less than 0.044mm is 94wt%.

[0059] The mineralizer is: a mixture of boron iron concentrate and boric acid, the mixing ratio is 1:1;

[0060...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of sintered ore production adopting vanadium titano-magnetite, and particularly provides a compound additive, a preparation method thereof and application of the compound additive in sintered ore production adopting the vanadium titano-magnetite. The compound additive contains, by weight, 1-5% of Ig, 70-90% of CaO, 0.1-4% of MgO, 0.01-5% of SiO2 and 0.1-1% of B2O3. The preparation method comprises the step that active lime, an organic binding agent, a selective mineralizer and a selective additive are blended and subjected to mixing. The compound additive is applied to the sintered ore production process adopting the vanadium titano-magnetite, the current situation that in the traditional sintered ore production process with the vanadium titano-magnetite as the main raw materials, pelleting and sintering are difficult is avoided, the proportion of reasonable particle sizes in the pelleting process is increased, liquid phase generation in a low temperature stage of the sintering process is promoted, sintering is strengthened, the strength of sintered ore is improved, and the yield rate of the sintered ore is increased.

Description

technical field [0001] The invention relates to a composite auxiliary agent, a preparation method of the composite auxiliary agent and its application in producing sintered ore from vanadium-titanium magnetite. Background technique [0002] Vanadium-titanium magnetite concentrate has poor granulation performance, TiO 2 High content, high sintering melting point, less sintering liquid phase. Years of research and practice have shown that the sintering of vanadium-titanium iron concentrate has poor air permeability, low vertical sintering speed, and less liquid phase, resulting in poor sinter strength, low yield, high return rate, high energy consumption, and low utilization factor . For many years, we have been looking for composite additives that can significantly improve its sintering performance. Various additives have been tested, and the effects are different. Some have been used in production for a long time, but because of their high price, they are not economical. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/243
Inventor 宋柯成王怀斌杨强段晓东李阳段大福
Owner 攀钢冶金材料有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com