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Titanium slag cement, preparation method and application thereof

A technology for cement and titanium slag, applied in cement production and other directions, can solve the problems of high production cost of ordinary Portland cement and low resource utilization rate of titanium tailing slag, so as to improve resource utilization rate, low cost and reduce production cost Effect

Inactive Publication Date: 2019-12-31
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a titanium slag cement and its preparation method and application in order to overcome the problems of low utilization rate of titanium tailings resources and high production cost of ordinary Portland cement in the prior art

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  • Titanium slag cement, preparation method and application thereof

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preparation example Construction

[0028] The second aspect of the present invention provides the preparation method of above-mentioned titanium slag cement, described method comprises the following steps:

[0029] (1) dry-blending the titanium extraction tailings, activator, strengthening agent, auxiliary strengthening agent and early strength agent to obtain a mixture;

[0030] (2) Aging the mixture described in step (1) and sealing it for packaging.

[0031] Preferably, in step (1), before the dry blending, it also includes ball milling and activating the titanium extraction tailings, and pulverizing the activator, strengthening agent, auxiliary strengthening agent and early strength agent. The titanium slag fine powder is obtained after the titanium slag is treated by a ball milling process, and the specific surface area of ​​the titanium slag fine powder is 400m 2 / kg or more, preferably 400-500m 2 / kg, has good pozzolanic activity; after the activator, reinforcing agent, auxiliary reinforcing agent and ...

Embodiment 1

[0043] 80 parts by weight of titanium extraction tailings, 10 parts by weight of desulfurized gypsum, 5 parts by weight of slaked lime, 3 parts by weight of vitriol, 2 parts by weight of calcium chloride and 1 part by weight of magnesium chloride were uniformly mixed by ball milling dry mixing process to obtain a mixture, and then Aging the mixture for 24 hours and sealing the package to obtain titanium slag cement S1, the properties of which are shown in Table 2. Wherein, before the dry blending, it also includes ball milling and activating the titanium extraction tailings, and pulverizing the exciter, strengthening agent, auxiliary strengthening agent and early strengthening agent. After ball milling, the obtained titanium slag fine powder has a specific surface area of ​​405m 2 / kg, after pulverizing, the particle size of the obtained slaked lime, green vitriol, calcium chloride and magnesium chloride fine powder is below 250 mesh, and the particle size of the obtained desu...

Embodiment 2

[0045] 50 parts by weight of titanium extraction tailings, 20 parts by weight of desulfurized gypsum, 20 parts by weight of slaked lime, 5 parts by weight of vitriol and 5 parts by weight of calcium chloride are uniformly mixed by ball milling dry mixing process to obtain a mixture, and then the mixture is aged After 24 hours, sealed and packaged, titanium slag cement S2 can be obtained, and its properties are shown in Table 2. Wherein, before the dry blending, it also includes ball milling and activating the titanium extraction tailings, and pulverizing the exciter, strengthening agent, auxiliary strengthening agent and early strengthening agent. After ball milling, the obtained titanium slag fine powder has a specific surface area of ​​450m 2 / kg, after pulverizing, the particle size of the obtained slaked lime, green vitriol and calcium chloride fine powder is below 250 mesh, and the particle size of the obtained desulfurized gypsum fine powder is below 200 mesh; of.

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Abstract

Relating to the technical field of inorganic non-metallic materials, the invention discloses titanium slag cement, a preparation method and application thereof. The titanium slag cement contains titanium extraction tailings, an activator, a reinforcing agent, an auxiliary reinforcing agent and an early strength agent; wherein the titanium extraction tailings contain 25-30wt% of calcium oxide, 20-25wt% of silicon dioxide, 5-10wt% of titanium dioxide, 5-7wt% of fixed carbon, 7-8wt% of calcium chloride and magnesium chloride, 10-20wt% of aluminum oxide and 5-10wt% of magnesium oxide. The titaniumextraction tailings are adopted as the main raw material to prepare titanium slag cement, while the titanium slag cement production cost is reduced, and the resource utilization rate is increased, the titanium slag cement also has the characteristics of high strength and quick setting and hardening, and the performance indexes meet the 325R grade index requirements of ordinary Portland cement, therefore the titanium slag cement can be applied to cement blocks, cement pavement bricks, mortar, roadbed water stable layers, soil body curing materials and temporary engineering.

Description

technical field [0001] The invention relates to the technical field of inorganic non-metallic materials, in particular to a titanium slag cement and its preparation method and application. Background technique [0002] Panzhihua Iron and Steel produces more than 7 million tons of titanium-containing blast furnace slag every year, and is currently conducting research on the titanium extraction process from titanium-containing blast furnace slag. At that time, a large amount of titanium-containing tailings will be produced. If the titanium-containing tailings are not properly treated, it will inevitably cause Due to environmental pollution and waste of resources, it is necessary to take the approach of resource utilization in order to realize the green and clean development model of the whole process of titanium extraction from titanium-containing blast furnace slag. [0003] At present, a large amount of ordinary Portland cement is produced using natural resource limestone. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/153C04B7/36
CPCC04B7/153C04B7/36Y02P40/10
Inventor 郝建璋黎建明任艳丽曾冠武邵国庆
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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