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Preparation method of ferro-nickel slag inorganic fiber pulp

A technology of inorganic fibers and nickel-iron slag, applied in the directions of inorganic fibers/sheets, waste addition, etc., can solve problems such as shortage of papermaking raw materials, and achieve the effects of reducing papermaking costs, solving environmental pollution, and saving energy

Active Publication Date: 2019-10-25
张文生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a papermaking method using nickel-iron slag inorganic fiber pulp as raw material to solve the shortage of traditional papermaking raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Preparation of ferronickel slag inorganic fibers

[0036] Mix 80wt% ferronickel slag with 10wt% lime, 1.5wt% lead oxide and 6wt% zinc oxide in proportion, transport them to a high-temperature electric furnace, heat to 1800°C, and calcinate at high temperature for 60 minutes to make a slurry. The calcined slurry flows to the frequency conversion high-speed centrifugal wire drawing machine through the bottom of the electric melting furnace. By adding 0.05wt% aluminum silicate, the slurry is pulled out in time when the slurry becomes flocculent cotton, and the nickel-iron slag is collected by the cotton collector. fiber.

[0037] 2. Preparation of ferronickel slag inorganic fiber pulp

[0038] The ferronickel slag inorganic fibers are chopped into 3mm sections, and the slag is removed by a sand settling tank to remove the unmelted ferronickel slag particles in the ferronickel slag inorganic fibers, and the ferronickel slag particles are directly returned to the furnace...

Embodiment 2

[0044] 1. Preparation of ferronickel slag inorganic fibers

[0045] Mix 80wt% ferronickel slag with 12wt% lime, 1wt% lead oxide and 5wt% zinc oxide, etc. in proportion, transport it to a high-temperature electric furnace, heat it to 2000°C, and calcinate at high temperature for 50 minutes to make a slurry. The calcined slurry flows to the frequency conversion high-speed centrifugal wire drawing machine through the bottom of the electric melting furnace. By adding 0.05wt% aluminum silicate, the slurry is pulled out in time when the slurry becomes flocculent cotton, and the nickel-iron slag is collected by the cotton collector. fiber.

[0046] 2. Preparation of ferronickel slag inorganic fiber pulp

[0047] The ferronickel slag inorganic fibers are chopped into 3mm sections, and the slag is removed by a sand settling tank to remove the unmelted ferronickel slag particles in the ferronickel slag inorganic fibers, and the ferronickel slag particles are directly returned to the fu...

Embodiment 3

[0053] 1. Preparation of ferronickel slag inorganic fibers

[0054]Mix 80wt% ferronickel slag with 12wt% lime, 0.5wt% lead oxide and 7wt% zinc oxide, etc. in proportion, transport it to a high-temperature electric furnace, heat it to 2200°C, and calcinate at high temperature for 30 minutes to make a slurry. The calcined slurry flows to the frequency conversion high-speed centrifugal wire drawing machine through the bottom of the electric melting furnace. By adding 0.05wt% aluminum silicate, the slurry is pulled out in time when the slurry becomes flocculent cotton, and the nickel-iron slag is collected by the cotton collector. fiber.

[0055] 2. Preparation of ferronickel slag inorganic fiber pulp

[0056] The ferronickel slag inorganic fibers are chopped into 3mm sections, and the slag is removed by a sand settling tank to remove the unmelted ferronickel slag particles in the ferronickel slag inorganic fibers, and the ferronickel slag particles are directly returned to the f...

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Abstract

The invention provides a preparation method of ferro-nickel slag inorganic fiber pulp. The method includes the steps that 1, ferro-nickel slag slurry is mixed with lime, lead oxide and zinc oxide through conveying equipment; 2, the evenly-mixed raw materials are calcined at a high temperature in a high-temperature electric melting furnace to form slurry; 3, aluminum silicate is added into the slurry obtained through calcination, when the slurry becomes flocculent cotton, the flocculent cotton is pulled out in time, and ferro-nickel slag inorganic fibers are collected through a cotton collecting machine; 4, the prepared ferro-nickel slag inorganic fibers are chopped and subjected to slag removal through a grit settling tank, and then a softener, pulp fibers, a thickener, a modifier, a modified thickener, a binder and water are added for pulping; and 5, an obtained solution is heated and continuously stirred, then slag is further removed through a grit catcher, and after cooling to the room temperature, the uniform ferro-nickel slag inorganic fiber pulp is obtained. The ferro-nickel slag inorganic fiber pulp obtained through the method has the advantages of being super fine, super soft and tough.

Description

technical field [0001] The invention relates to the field of pulp and its manufacturing method, in particular to a manufacturing method of ferronickel slag inorganic fiber pulp. Background technique [0002] In recent years, the annual discharge of ferronickel slag in my country has exceeded 30 million tons, and it has become the fourth largest smelting slag in my country after iron slag, steel slag and red mud. A large amount of ferronickel slag can only be treated as waste, stacked or buried in deep sea, which not only occupies land, pollutes the environment, but also poses severe challenges to the sustainable development of ferronickel smelting. [0003] According to statistics from the China Paper Association, my country's pulp production in 2017 was 79.49 million tons, a year-on-year increase of 0.30%. Among them, 10.5 million tons of wood pulp, a year-on-year increase of 4.48%; 63.02 million tons of waste paper pulp, a year-on-year decrease of 0.43%; 5.97 million tons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/01D21H13/36
CPCD21H17/01D21H13/36
Inventor 张文生
Owner 张文生
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