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A method for preparing calcium titanate adsorption material by using low-grade rutile concentrate

An adsorption material, low-grade technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc. problems, to achieve the effect of solving ecological environment problems, reducing temperature, and broad application prospects

Active Publication Date: 2022-06-07
SHANGLUO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Low-grade rutile concentrate is a low-grade rutile concentrate produced due to the low grade, fine particle size, complex mineral composition and intercalation relationship of rutile primary ore, and the limitation of sorting technology. Because it cannot be further used to prepare high-end Titanium materials are piled up, occupying a lot of land resources
This not only affects the ecological environment, but also causes a waste of resources, and at the same time makes the use of titanium dioxide, the main chemical component, unreasonable

Method used

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  • A method for preparing calcium titanate adsorption material by using low-grade rutile concentrate
  • A method for preparing calcium titanate adsorption material by using low-grade rutile concentrate
  • A method for preparing calcium titanate adsorption material by using low-grade rutile concentrate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Mix 4 g of low-grade rutile concentrate with a particle size of 70 μm, 2.8 g of analytically pure calcium oxide, 1 g of analytically pure calcium chloride, and 1 g of analytically pure potassium silicate, and put it into a ball mill for grinding for 1 hour; pass the mixture through a tablet machine, Press the material sheet with a diameter of 20mm and a height of 10mm under the pressure of 30Mpa; put the material sheet into a muffle furnace at 750°C for 2 hours, and cool it naturally with the furnace, and wash the roasted material repeatedly with deionized water until no Cl - exist and dry to obtain calcium titanate powder material.

[0028] Take 1g of calcium titanate powder material and add it to 250mL of heavy metal ion solution containing copper (300mg / L), lead (600mg / L) and cadmium (300mg / L), perform magnetic stirring, take samples at regular intervals, filter, take solution, and the content of heavy metal ions in the solution was measured by atomic absorption spec...

Embodiment 2

[0033] Mix 4 g of low-grade rutile concentrate with a particle size of 70 μm, 2.8 g of analytically pure calcium oxide, 1 g of analytically pure calcium chloride, and 1 g of analytically pure potassium silicate, and put it into a ball mill for grinding for 1 hour; pass the mixture through a tablet machine, Pressed into material pieces with a diameter of 20mm and a height of 10mm under a pressure of 30Mpa; put the material pieces into a muffle furnace at 800 ° C for 3 hours, and cooled naturally with the furnace. - exist and dry to obtain calcium titanate powder material.

[0034] Take 1g of calcium titanate powder material and add it to 250mL of heavy metal ion solution containing copper (400mg / L), lead (800mg / L) and cadmium (400mg / L), carry out magnetic stirring, take samples at regular intervals, filter, take solution, and the content of heavy metal ions in the solution was measured by atomic absorption spectrophotometer to obtain the adsorption amount of heavy metal ions ad...

Embodiment 3

[0039] Mix 5g of low-grade rutile concentrate with a particle size of 70μm, 3g of analytically pure calcium oxide and 2.4g of analytically pure calcium chloride, and put it into a ball mill for grinding for 2 hours; pass the mixture through a tablet machine and press it under a pressure of 30Mpa. A material piece with a diameter of 20mm and a height of 10mm; put the material piece into a muffle furnace at 900°C for 3 hours, and cool it naturally with the furnace. That is, the calcium titanate powder material is obtained.

[0040] Take 1g of calcium titanate powder material and add it to 250mL of heavy metal ion solution containing copper (350mg / L), lead (700mg / L) and cadmium (350mg / L), carry out magnetic stirring, take samples at regular intervals, filter, take solution, and the content of heavy metal ions in the solution was measured by atomic absorption spectrophotometer to obtain the adsorption amount of heavy metal ions adsorbed by calcium titanate.

[0041] The scanning ...

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Abstract

The invention discloses a method for preparing calcium titanate adsorption material by using low-grade rutile concentrate. The method prepares a calcium titanate adsorption material with a stable crystal structure and excellent stability. Low-grade rutile has a wide range of sources and low price, and can comprehensively utilize the resources of titanium dioxide, turn waste into treasure, and solve the problem of ecological environment pollution. At the same time, using calcium chloride and potassium silicate as the molten salt reaction medium can effectively reduce the temperature of the reaction system and save costs. The high value-added products produced can effectively remove heavy metal ions in sewage, and have broad application prospects in the field of sewage treatment, with good economic, environmental and social benefits.

Description

technical field [0001] The invention belongs to the technical field of powder material preparation, in particular to a method for preparing a calcium titanate adsorption material by using low-grade rutile concentrate. Background technique [0002] Rutile is one of the main minerals for refining titanium metal and manufacturing titanium dioxide. Rutile ore in my country has the characteristics of low grade, fine particle size, complex mineral composition and inlaid relationship, and poor selectivity, which leads to low grade of rutile concentrate and increased difficulty in utilization. Large, a large number of low-grade rutile concentrate products are accumulated, occupying a lot of land and polluting the ecological environment. Therefore, how to make full use of such rutile concentrate resources, prepare high value-added products, and maximize the comprehensive utilization of resources has important economic significance and practical significance. The patent "A method for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/04B01J20/30C02F1/28C02F101/20
CPCB01J20/04B01J20/3021B01J20/3007B01J20/3078B01J20/3071C02F1/281B01J2220/4806C02F2101/20Y02W10/37
Inventor 阎赞刘明宝王闻单崔孝炜叶媛媛李峰许娇刘骞
Owner SHANGLUO UNIV
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