Production process for high-activity composite type mineral slag micro-powder

Abstract

The invention discloses a production process for high-activity composite type mineral slag micro-powder. The production process comprises the following steps: first, conveying blast furnace slag, furnace slag and steel slag to a drying system, and performing drying treatment on the blast furnace slag, the furnace slag and the steel slag for later use after the moisture in the blast furnace slag, the furnace slag and the steel slag is dried; then, feeding the blast furnace slag, the furnace slag and the steel slag to a buffering material cabin; then, feeding to a steam mill through a feeding valve, and further crushing blast furnace water slag by ultra-fine grinding equipment in the steam mill under the impact of high-temperature high-pressure steam; feeding the crushed material into a micro-powder grading machine for performing grading treatment; and finally, collecting qualified semi-finished mineral slag micro-powder by a dust collector system through a grading wheel to obtain the finished high-activity composite type mineral slag micro-powder. According to the production process for the high-activity composite type mineral slag micro-powder disclosed by the invention, the preparation method provided by the invention is easy to operate, energy-saving, high-efficiency and environment-friendly; the quality of the product can be effectively improved; the performance of the product can be improved; and the production process has obvious social, economical and environment-friendly benefits.

Description

technical field

[0001] The invention relates to a production process of high-activity composite slag micropowder, which belongs to the technical field of building materials. Background technique

[0002] As a widely accepted special admixture for high-performance concrete, slag micropowder has excellent performance, which is manifested in improving the fluidity and water retention of fresh concrete, reducing temperature-varying cracks caused by hydration, and the hardened concrete has good Excellent resistance to sulfate erosion, chloride salt penetration, seawater erosion, carbonation, and alkali-aggregate reaction, and can improve the long-term strength of concrete, and has good durability and wear resistance.

[0003] At present, the main treatment method for blast furnace slag produced by domestic steel mills is to sell it to nearby cement plants at a lower price, and the cement plants process it into cement admixtures through ball mills or vertical mills. For steel mil...

Examples

Embodiment 1

[0021] A production process of high-activity compound slag micropowder. The raw materials are composed of the following components by weight: desulfurization gypsum: 25 parts, slag: 35 parts, furnace slag: 22 parts, steel slag: 12.5 parts, fly ash: 20.5 parts, additives : 13 servings.

[0022] Including the following steps:

[0023] (a) First, blast furnace slag, slag, and steel slag are transported to the drying system for drying treatment; after the moisture in the blast furnace slag, slag, and steel slag is dried, set aside;

[0024] (b) Send the blast furnace slag, furnace slag and steel slag to the buffer silo, and then feed the material into the steam mill through the feeding valve;

[0025] (c) Blast furnace slag is pulverized by ultra-fine grinding equipment under the impact of high-temperature and high-pressure steam in the steam mill, and the pulverized material is transported to a micro-powder classifier for classification;

[0026] (d) the micropowder enters the ...

Embodiment 2

[0034] A production process of high-activity composite slag micropowder. The raw materials are composed of the following components by weight: desulfurization gypsum: 26 parts, slag: 40 parts, furnace slag: 24.5 parts, steel slag: 14 parts, fly ash: 23 parts, additives : 15.5 servings.

[0035] Including the following steps:

[0036] (a) First, blast furnace slag, slag, and steel slag are transported to the drying system for drying treatment; after the moisture in the blast furnace slag, slag, and steel slag is dried, set aside;

[0037] (b) Send the blast furnace slag, furnace slag and steel slag to the buffer silo, and then feed the material into the steam mill through the feeding valve;

[0038] (c) Blast furnace slag is pulverized by ultra-fine grinding equipment under the impact of high-temperature and high-pressure steam in the steam mill, and the pulverized material is transported to a micro-powder classifier for classification;

[0039] (d) the micropowder enters the...

Embodiment 3

[0047] A production process of high-activity composite slag micropowder. The raw materials are composed of the following components by weight: desulfurization gypsum: 27 parts, slag: 45 parts, furnace slag: 27 parts, steel slag: 15.5 parts, fly ash: 25.5 parts, additives : 18 servings.

[0048] Including the following steps:

[0049] (a) First, blast furnace slag, slag, and steel slag are transported to the drying system for drying treatment; after the moisture in the blast furnace slag, slag, and steel slag is dried, set aside;

[0050] (b) Send the blast furnace slag, furnace slag and steel slag to the buffer silo, and then feed the material into the steam mill through the feeding valve;

[0051] (c) Blast furnace slag is pulverized by ultra-fine grinding equipment under the impact of high-temperature and high-pressure steam in the steam mill, and the pulverized material is transported to a micro-powder classifier for classification;

[0052] (d) the micropowder enters the...

technical field

[0001] The invention relates to a production process of high-activity composite slag micropowder, which belongs to the technical field of building materials. Background technique

[0002] As a widely accepted special admixture for high-performance concrete, slag micropowder has excellent performance, which is manifested in improving the fluidity and water retention of fresh concrete, reducing temperature-varying cracks caused by hydration, and the hardened concrete has good Excellent resistance to sulfate erosion, chloride salt penetration, seawater erosion, carbonation, and alkali-aggregate reaction, and can improve the long-term strength of concrete, and has good durability and wear resistance.

[0003] At present, the main treatment method for blast furnace slag produced by domestic steel mills is to sell it to nearby cement plants at a lower price, and the cement plants process it into cement admixtures through ball mills or vertical mills. For steel mil...

Examples

Embodiment 1

[0021] A production process of high-activity compound slag micropowder. The raw materials are composed of the following components by weight: desulfurization gypsum: 25 parts, slag: 35 parts, furnace slag: 22 parts, steel slag: 12.5 parts, fly ash: 20.5 parts, additives : 13 servings.

[0022] Including the following steps:

[0023] (a) First, blast furnace slag, slag, and steel slag are transported to the drying system for drying treatment; after the moisture in the blast furnace slag, slag, and steel slag is dried, set aside;

[0024] (b) Send the blast furnace slag, furnace slag and steel slag to the buffer silo, and then feed the material into the steam mill through the feeding valve;

[0025] (c) Blast furnace slag is pulverized by ultra-fine grinding equipment under the impact of high-temperature and high-pressure steam in the steam mill, and the pulverized material is transported to a micro-powder classifier for classification;

[0026] (d) the micropowder enters the ...

Embodiment 2

[0034] A production process of high-activity composite slag micropowder. The raw materials are composed of the following components by weight: desulfurization gypsum: 26 parts, slag: 40 parts, furnace slag: 24.5 parts, steel slag: 14 parts, fly ash: 23 parts, additives : 15.5 servings.

[0035] Including the following steps:

[0036] (a) First, blast furnace slag, slag, and steel slag are transported to the drying system for drying treatment; after the moisture in the blast furnace slag, slag, and steel slag is dried, set aside;

[0037] (b) Send the blast furnace slag, furnace slag and steel slag to the buffer silo, and then feed the material into the steam mill through the feeding valve;

[0038] (c) Blast furnace slag is pulverized by ultra-fine grinding equipment under the impact of high-temperature and high-pressure steam in the steam mill, and the pulverized material is transported to a micro-powder classifier for classification;

[0039] (d) the micropowder enters the...

Embodiment 3

[0047] A production process of high-activity composite slag micropowder. The raw materials are composed of the following components by weight: desulfurization gypsum: 27 parts, slag: 45 parts, furnace slag: 27 parts, steel slag: 15.5 parts, fly ash: 25.5 parts, additives : 18 servings.

[0048] Including the following steps:

[0049] (a) First, blast furnace slag, slag, and steel slag are transported to the drying system for drying treatment; after the moisture in the blast furnace slag, slag, and steel slag is dried, set aside;

[0050] (b) Send the blast furnace slag, furnace slag and steel slag to the buffer silo, and then feed the material into the steam mill through the feeding valve;

[0051] (c) Blast furnace slag is pulverized by ultra-fine grinding equipment under the impact of high-temperature and high-pressure steam in the steam mill, and the pulverized material is transported to a micro-powder classifier for classification;

[0052] (d) the micropowder enters the...