Pyrolusite blocks and production thereof

Abstract

A method of primary treatment on ore or flotsam, especially a preparation method of pyrolusite clamp dog. Materials needed are listed as follows by weight percentage:manganeseore80-90%,sodiumsilicate2-3%,dextrin2-3%,concrete1-2%,gesso1-2%,water1-2%,carbamide 0.5-1%.It includes such steps as breaking up, screening, batching, mixing, extrusion forming, desiccation and finished product packaging. It has lots of advantages such as clamp dog fastness, high intensity; can be put into furnace directly; pyrolusite resource can be effectively used so that it's good for environment; clamp dog pyrolusite can be used to smelt alloy directly, to wash blast furnace directly and to substitute part of silicon manganese alloy as slagging agent and refrigerant in steel-making; briefness of preparation technique and easiness to process.

Description

technical field

[0001] The present invention relates to the primary treatment of ore or waste, in particular to a bonded block of pyrolusite and a method for its preparation. Background technique

[0002] Manganese ore is one of the important raw materials for metallurgical production. It can not only smelt manganese alloys, but also can be used as a washing material for ironmaking blast furnaces. It can also be used as slagging agents, coolants, and additives for alloying elements in the steelmaking process. However, The hard manganese ore resources that can be directly used are limited and the price is high; the pyrolus ore is of high grade, but it is mainly in the form of fine grains. Direct use of these pyrolusite resources. In this way, on the one hand, beneficial resources cannot be used, and on the other hand, alternative substances must be found and used. Contents of the invention

[0003] The purpose of the present invention is to provide a certain strength pyro...

Examples

Embodiment 1

[0023] Under normal temperature and pressure, mix 3% of sodium pyrolusite, 3% of dextrin, 2% of gypsum powder, 2% of Si-containing or non-Si-containing cement, and 1% of urea into 80% of pyrolusite powder according to Table 1. , add 2% water and stir in a blender, fully mix; after aging, the wet material is pressed into a block in a ball press; naturally dried in the air, then sieved, weighed, and bagged. The Si-containing cement block was used as the blast furnace washing material, and the Si-free cement block was used as the slagging agent, coolant, and alloy element addition material for steelmaking. The test results are listed in Table 1.

Embodiment 2

[0025] Repeat the method of Example 1 by the specified component content in Table 1, and the test results are listed in Table 1.

Embodiment 3

[0027] Repeat the method of Example 1 by the specified component content in Table 1, and the test results are listed in Table 1.

[0028] The content of each component (weight

technical field

[0001] The present invention relates to the primary treatment of ore or waste, in particular to a bonded block of pyrolusite and a method for its preparation. Background technique

[0002] Manganese ore is one of the important raw materials for metallurgical production. It can not only smelt manganese alloys, but also can be used as a washing material for ironmaking blast furnaces. It can also be used as slagging agents, coolants, and additives for alloying elements in the steelmaking process. However, The hard manganese ore resources that can be directly used are limited and the price is high; the pyrolus ore is of high grade, but it is mainly in the form of fine grains. Direct use of these pyrolusite resources. In this way, on the one hand, beneficial resources cannot be used, and on the other hand, alternative substances must be found and used. Contents of the invention

[0003] The purpose of the present invention is to provide a certain strength pyro...

Examples

Embodiment 1

[0023] Under normal temperature and pressure, mix 3% of sodium pyrolusite, 3% of dextrin, 2% of gypsum powder, 2% of Si-containing or non-Si-containing cement, and 1% of urea into 80% of pyrolusite powder according to Table 1. , add 2% water and stir in a blender, fully mix; after aging, the wet material is pressed into a block in a ball press; naturally dried in the air, then sieved, weighed, and bagged. The Si-containing cement block was used as the blast furnace washing material, and the Si-free cement block was used as the slagging agent, coolant, and alloy element addition material for steelmaking. The test results are listed in Table 1.

Embodiment 2

[0025] Repeat the method of Example 1 by the specified component content in Table 1, and the test results are listed in Table 1.

Embodiment 3

[0027] Repeat the method of Example 1 by the specified component content in Table 1, and the test results are listed in Table 1.

[0028] The content of each component (weight

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