Equipment and method for preparing inorganic slag fiber from hot blast furnace slag

A technology of slag fiber and blast furnace slag, which is applied in the field of preparation of inorganic non-metallic materials, can solve the problems of difficulty in preparing inorganic slag fiber with uniform quality and difficulty in fusion, and achieve the effects of promoting economy and society, wide application, and simple and easy method

Inactive Publication Date: 2011-12-14
蓝天燕园科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At a high temperature of 1400°C to 1500°C, solid tempering substances such as fly ash added to the molten hot blast furnace slag are difficult to mix with the hot b...

Method used

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  • Equipment and method for preparing inorganic slag fiber from hot blast furnace slag
  • Equipment and method for preparing inorganic slag fiber from hot blast furnace slag
  • Equipment and method for preparing inorganic slag fiber from hot blast furnace slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The hot blast furnace slag (70% by weight) directly discharged from the slag outlet of the blast furnace 1 is stored through the slag bag 2, and the temperature of the hot blast furnace slag is adjusted to 1450°C. At the same time, the additive fly ash (30% by weight) is added into the melting furnace 3 and heated by a heating element to melt it. Then, the molten hot blast furnace slag in the slag bag 2 and the molten additive fly ash in the melting furnace 3 enter the mixing furnace 5 through the drainage device 4 . In the mixing furnace 5, mixing is carried out by rotating mixing blades in the furnace, so as to obtain a mixed molten liquid as the final raw material for preparing inorganic slag fibers. Finally, the mixed molten liquid is added into the final furnace 6, and the temperature is adjusted to 1500°C. The molten liquid flows into the spinning machine 7, and under the action of the centrifugal force of the spinning roller, inorganic slag fiber filaments of di...

Embodiment 2

[0060] Using the same preparation method as in Example 1, the difference is that the temperature is adjusted to 1600°C in the final furnace 6, and the finally obtained inorganic slag fiber is as Figure 4 shown. The obtained fibers had an average diameter of 6.1 µm.

Embodiment 3

[0062] Using the same preparation method as in Example 1, the difference is that after the temperature is adjusted to 1700 ° C in the temperature control kettle 6, the molten liquid flow is obtained, and the multi-hole spinneret 7 is used to spray into filaments, and the injection pressure is 1.2 MPa, inorganic slag fibers are obtained after cooling. The obtained fibers had an average diameter of 5.5 µm.

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Abstract

The invention provides equipment and method for preparing inorganic ore slag fiber by utilizing thermal-state blast furnace slag. In the equipment, an additive melting furnace is designed. The method comprises the following steps: respectively melting the thermal-state blast furnace slag and the additive by utilizing the equipment and then evenly mixing so as to obtain a molten liquid which is evenly mixed; and making the molten liquid which is evenly mixed into silk so as to obtain the inorganic ore slag fiber. According to the invention, the method for preparing the inorganic ore slag by utilizing the novel equipment is simple and practicable and convenient for implementation, the sensible heat in a raw material is fully utilized, and the comprehensive utilization of different industrial waste materials such as thermal-state blast furnace slag and the like is realized, thereby overcoming the technical problems of fusing and evenly mixing; and the inorganic ore slag fiber having wide application and various good characteristics such as high temperature resistance, corrosion resistance, high strength, light specific gravity, good electric insulation property, low moisture absorption, small extension and the like can be prepared.

Description

technical field [0001] The invention belongs to the field of technical equipment for preparing inorganic non-metallic materials, and in particular relates to equipment for producing inorganic slag fibers, in particular to equipment for preparing inorganic slag fibers by using hot blast furnace slag, and using the equipment to prepare inorganic slag fibers Methods. Background technique [0002] Hot blast furnace slag is a by-product discharged from the blast furnace when smelting pig iron, and is the most important smelting waste slag in my country at the present stage. In the process of ironmaking, the raw materials of the blast furnace need to be added in addition to iron ore and fuel (coke), and a considerable amount of limestone and dolomite are added as fluxes. With the melting of the charge, the gangue in the ore, the ash in the coke, the co-solvent and other impurities that cannot enter the pig iron interact to form slag floating on the molten iron mainly composed of ...

Claims

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Application Information

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IPC IPC(8): C03B37/00
Inventor 王习东张作泰刘丽丽赵大伟
Owner 蓝天燕园科技有限公司
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