Method for treating nickel-iron slag and ceramic brick

A technology for nickel-iron slag and ceramic bricks, which is applied in the production, application, and household appliances of ceramic materials, can solve the problems of less comprehensive utilization, high cost, and complicated recovery of silicon and magnesium, and achieves the effect of broadening the utilization of resources.

Pending Publication Date: 2018-03-23
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The recovery of silicon and magnesium, the main components of ferronickel slag, is more complicated and costly. Compared with other metallurgical slags, there are fewer comprehensive utilization methods. Therefore, the means of treating ferronickel slag still needs to be further developed

Method used

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  • Method for treating nickel-iron slag and ceramic brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Follow the steps below to prepare ceramic tiles using ferronickel slag:

[0052] (1) Mix ferronickel slag, bentonite, silica and red mud slag in a mass ratio of 30:40:20:10.

[0053] The mass percentage of main components in ferronickel slag is CaO 8%, SiO 2 50%, MgO 20%, Al 2 o 3 5%, Cr 2 o 3 0.5%, NiO 0.2%, TFe 15%, (K 2 O+Na 2 O) 0.4%,

[0054] The mass percentage of the main component in bentonite is SiO 2 75%, Al 2 o 3 10%.

[0055] The mass percentage of the main component in silica is SiO 2 98%.

[0056] The mass percentage of the main components in red mud slag is CaO 10%, SiO 2 30%, Al 2 o 3 35%, (K 2 O+Na 2 O) 10%, TiO 2 6%, TFe 4%.

[0057] (2) Crushing and mixing the above-mentioned materials, transporting them into a ball mill for grinding treatment, so as to obtain powdery materials, and the mass percentage of powders with a particle size of not higher than 45 μm in the powdery materials is 90%.

[0058] (3) spraying and granul...

Embodiment 2

[0065] Follow the steps below to prepare ceramic tiles using ferronickel slag:

[0066] (1) Mix ferronickel slag, bentonite and silica according to the mass ratio of 70:20:10.

[0067] The main components in the ferronickel slag are CaO 10%, SiO 2 40%, MgO 30%, Al 2 o 3 1%, Cr 2 o 3 2%, NiO 0.1%, TFe 10%, (K 2 O+Na 2 O) 0.6%,

[0068] The mass percentage of the main component in bentonite is SiO 2 60%, Al 2 o 3 20%.

[0069] The mass percentage of the main component in silica is SiO 2 95%.

[0070] (2) Crushing and mixing the above-mentioned materials, transporting them into a ball mill for grinding treatment, so as to obtain powdery materials, and the mass percentage of powders with a particle size of not higher than 45 μm in the powdery materials is 90%.

[0071] (3) spraying and granulating the ground powdery material, the particle size of the obtained granular material is about 0.3mm, and the moisture content is 7wt%.

[0072] (4) The granular material ...

Embodiment 3

[0078] Follow the steps below to prepare ceramic tiles using ferronickel slag:

[0079] (1) Mix ferronickel slag, bentonite, silica and red mud slag at a mass ratio of 55:30:10:5.

[0080] The mass percentage of the main components in nickel-iron slag is CaO 9%, SiO 2 45%, MgO 25%, Al 2 o 3 3%, Cr 2 o 3 1%, NiO 0.15%, TFe 12%, (K 2 O+Na 2 O) 0.5%,

[0081] The mass percentage of the main component in bentonite is SiO 2 68%, Al 2 o 3 15%.

[0082] The mass percentage of the main component in silica is SiO 2 96%.

[0083] The mass percentage of the main components in the red mud slag is CaO 9%, SiO 2 25%, Al2O 3 40%, (K 2 O+Na 2 O) 9%, TiO 2 8%, TFe 3%.

[0084] (2) Crushing and mixing the above-mentioned materials, transporting them into a ball mill for grinding treatment, so as to obtain powdery materials, and the mass percentage of powders with a particle size not higher than 45 μm in the powdery materials is 87%.

[0085] (3) Spray granulating the...

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Abstract

The invention discloses a method for treating nickel-iron slag and a ceramic brick. The method comprises the following steps: (1) mixing nickel-iron slag, bentonite, silica and red mud molten slag toobtain a mixed material; (2) finely grinding the mixed materials to obtain a powder material; (3) performing spraying pelletizing treatment on the powder material to obtain a granular material; (4) performing molding treatment on the granular material to obtain raw material plates; (5) performing drying treatment and sintering on the raw material plates sequentially, thereby obtaining ceramic bricks. By adopting the method, high-quality ceramic bricks can be prepared from metallurgy wastes, namely nickel-iron slag, a novel way for resource utilization of the nickel-iron slag is developed, andremarkable economic benefits and environment benefits are made.

Description

technical field [0001] The invention relates to the field of building materials, in particular, the invention relates to a method for processing ferronickel slag and ceramic bricks. Background technique [0002] Nickel-iron slag is humus-type lateritic nickel ore, which is produced in the state of water quenching and quenching after the reduction and extraction of nickel element and part of iron in the high-temperature molten state. It is mainly composed of silicate components of magnesium, aluminum, and iron. Belongs to FeO-MgO-SiO 2 Ternary slag system, the main components are MgO, SiO 2 and FeO, the secondary components are mainly CaO, Al 2 o 3 、Cr 2 o 3 Wait. [0003] The recovery of silicon and magnesium, the main components of ferronickel slag, is more complicated and costly. Compared with other metallurgical slags, there are fewer comprehensive utilization methods. Therefore, the means of treating ferronickel slag still need to be further developed. Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/138C04B33/16C04B33/132C04B35/626C04B35/14
CPCC04B33/1322C04B33/138C04B33/16C04B35/14C04B35/6261C04B35/62695C04B2235/3201C04B2235/3206C04B2235/3208C04B2235/3217C04B2235/3272C04B2235/3279C04B2235/96Y02P40/60
Inventor 孙辉边妙莲马冬阳陈士朝苏双青李亚奇吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
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