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Granulating device and granulating method for molten material

A melting material and granulation technology, applied in the direction of liquid separation into beads and granulation, can solve the problems of bulky granulation equipment, product accumulation and remelting, high energy consumption, etc., achieve uniform product particles, improve granulation quality, and simple structure Effect

Pending Publication Date: 2021-04-20
北京中冶设备研究设计总院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the current rotary disk method, the diameter of the granulation chamber is very large due to the high speed of the liquid particles thrown out by the rotary disk, resulting in a huge granulation equipment; if a baffle (or impact plate) is set to reduce size, which will cause certain bonding to affect the granulation effect; high-pressure air granulation consumes high energy and will cause noise pollution problems; the residual heat inside the particles solidified on the surface of the particles in the particle collection stage promotes the bonding, agglomeration or remelting of the particle surface , produce larger particle size particles or large pieces, resulting in product accumulation and remelting

Method used

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  • Granulating device and granulating method for molten material
  • Granulating device and granulating method for molten material
  • Granulating device and granulating method for molten material

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Effect test

Embodiment 1

[0052] S1. Lead the ferronickel slag at 1400°C into the granulation chamber through the feed pipe with a processing capacity of 30t / h, so that the ferronickel slag falls into the center of the turntable; the diameter of the turntable is 450mm, and the speed of the turntable is 800rpm-1500rpm; The angle between the direction of the wind blowing in from the tuyere and the movement direction of the material thrown out by the turntable is 45°

[0053] S2. Under the action of centrifugal force, the ferronickel slag falling into the center of the turntable flies out of the turntable along the edge of the turntable in a direction similar to the rotation tangent of the turntable;

[0054] S3 The molten material flying out of the turntable forms fine droplets under the combined action of inertial force, surface tension, gravity and cyclone field;

[0055] S4. The whirlwind field formed by the wind entering the tuyeres cools the fine droplets and solidifies them into slag particles; amo...

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Abstract

The invention provides a granulating device and a granulating method for a molten material. The granulating device comprises a granulating chamber, the granulating chamber comprises a tip cone structure, a middle ring section connected with the bottom end of the tip cone structure and a lower cone section connected with the bottom end of the middle ring section; an air outlet is formed in the top end of the tip cone structure, and a material guide pipe is arranged in the air outlet; at least one group of blower nozzles are arranged on the outer side wall of the middle ring section, and each group of blower nozzles at least comprises two blower nozzles which are symmetrically arranged; a rotating disc is arranged in the middle ring section, and the center of the rotating disc is opposite to the bottom of the material guide pipe; and the lower cone section comprises a lower cone structure arranged on the periphery of the lower portion of the rotary disc, and a discharging port is formed in the bottom of the lower cone structure. By utilizing the invention, the problem that the existing granulation equipment is huge can be solved; and large-particle-size particles or large blocks are easy to generate, so that the phenomena of product accumulation, remelting and the like are caused.

Description

technical field [0001] The invention relates to the technical field of material preparation, and more specifically, to a granulation device and a granulation method for molten materials. Background technique [0002] There are many ways to granulate molten materials. Among the centrifugal granulation methods, the rotary disc method is a method with good granulation effect and strong application value. The molten material can be granulated into liquid particles with uniform particles by the action of centrifugal force. With appropriate cooling method, uniform solid particles can be successfully obtained. [0003] However, in the current rotary disk method, the diameter of the granulation chamber is very large due to the high speed of the liquid particles thrown out by the rotary disk, resulting in a huge granulation equipment; if a baffle (or impact plate) is set to reduce size, which will cause certain bonding to affect the granulation effect; high-pressure air granulation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J2/04
Inventor 张金良张富信黄忠源刘猛朱立江马超宇黄超
Owner 北京中冶设备研究设计总院有限公司
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