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Production technology transfer of High efficiency Sodium free slagging agent for aluminum alloy smelting

Ⅰ、Introduction of technical achievements and

products

Project Background Technology

With the continuous expansion of aluminum alloy applications, some

special applications of high-strength cast aluminum alloy, such as

aerospace, high-speed rail, automobile, motorcycle wheel, A356,

A380, A386, pure aluminum alloy, aluminum alloy mechanical

strength and performance has special quality requirements.

Traditional craft production of aluminium alloy refining and slag

agent, generally contain a large amount of sodium salt or calcium

salt, in the process of aluminium magnesium alloy smelting refined,

if using sodium/calcium refining slag agent, to introduce

sodium/calcium aluminum and its alloys, aluminum and magnesium

alloy ingot containing excessive Na/Ca element causes hot rolled

copper ingot appeared in the process of cracking, to produce sodium "brittle" phenomenon, It greatly affects the performance of

high-strength aluminum alloy. In order to avoid the phenomenon of

"sodium brittle" in aluminum alloy processing, sodium - free

slagging agent came into being.

Ⅱ、Product features and usage

Non-sodium slagging agent is made of a variety of non-sodium salts

and other inorganic compounds by special processing according to a

certain proportion of preparation, with a refining dusting machine

with nitrogen as the carrier, it is evenly sprayed into the interior of

liquid aluminum, and then realize the double purification of gas and

flux on the melt, widely used in the aluminum processing industry. It

has the following advantages:

1, sodium free slagging agent in the melt reaction and release a

variety of gases, refining the melt, degassing, slag removal, improve

the effect of gill phosphorus metamorphism. It has the advantages of gas slagging and flux slagging as one, and the degassing effect is

better;

2, does not contain sodium ingredients, avoid or reduce the surface

of aluminum and aluminum alloy white spots and "sodium brittle"

phenomenon, improve the quality of products;

3, add less, simple and convenient operation, reduce the labor

intensity of workers, flux utilization rate is high, effectively realize

the melt degassing, slag removal.

4, the slagging agent can also greatly improve the metamorphic

effect of phosphorus modifier

Application temperature and method:

1. Properties: white powder

2, applicable alloy: used for melting high strength cast aluminum

alloy and a variety of common grades of aluminum alloy;

3, the use of temperature: 700 ~ 780℃;

4, use method and dosage: in the refining temperature range will be

quantitative sodium free slagging agent into the duster storage tank

Close the cover, first pass nitrogen (pressure is 1.2 ~ 1.8kg/cm2) and

then open the switch below the refining tank, wait

When the iron pipe is sprayed with slagging agent, the iron pipe

should be inserted into the liquid aluminum for horizontal

movement, and the insertion depth should be iron pipe

The end should be 3/4 of the depth of liquid aluminum. Move the

iron pipe around 2 ~ 3 times to avoid touching the furnace wall.

To block the pipe, in the refining time (6 ~ 20 tons for 10 ~ 15

minutes), the flux spray, and then the iron

The tube is drawn from the liquid aluminum and turns off the

nitrogen.

Recommended dosage: 0.1-0.5% of melt

The specific demand depends on the amount of inclusion to increase

or decrease the amount of the actual amount from the usual

Gain by practice.

Matters needing attention:

A, by opening the size of the switch at the bottom of the refining

tank to control the speed of powder feeding, in the refining time

As far as possible to have flux ejection;

B. By controlling the nitrogen pressure to control the overturn height of liquid aluminum, under the premise of not blocking the

pipe, turn over

It is better to have a smaller teng, preferably under 15cm.

Packaging, storage and transportation

Plastic bag sealed 2kg packing, outer carton, 20kg/ carton. Prevent

heat, moisture and sun protection during storage and

transportation.

Ⅲ、Application field, market prospect and industrial

production conditions of project products

Sodium free slagging agent is suitable for aluminum magnesium

alloy refining slagging treatment, mainly used for a variety of high

strength cast aluminum alloy such as automobile wheels, pistons in

the smelting process of melt refining slagging degassing. Remove

the dross on the surface of liquid aluminum, adsorb the slag near the

surface, and can also be used for frying slag. It is one of the

necessary fluxes for aluminum and aluminum alloy smelting, with

large market demand and broad application prospect.

Aluminum sodium free slagging agent production equipment and

process is relatively simple, mainly drying furnace, crushing

equipment, mixing equipment, simple packaging equipment,

equipment investment is less, the production process is easy to

master.

Ⅳ、Analysis of technical and economic benefit of project

industrialization and environmental evaluation

Aluminum non-sodium slagging agent costs about 1100-1300 yuan

per ton of raw materials, and the average market price is about 3200

~ 3500 yuan/ton. The cost of raw materials fluctuates with the

market price and varies with the production volume. Raw material

market is easy to buy, mass production to form a scale, with good

economic benefits.

Aluminum sodium free slagging agent production using raw

materials are non-toxic common chemical raw materials, the

production process without sewage, waste gas, waste residue

discharge, will not cause pollution to the environment.

Ⅴ、Methods of technology transfer and cooperation

One-time technology transfer, provide a full set of technical formula, production process, equipment list and raw material procurement manufacturers, construction specifications, etc.

Can study in my company, on-site training, learn so far. Engineers can also be sent to provide on-site technical services to guide the production of qualified products. At the same time, we can provide a complete set of solutions such as plant and equipment selection, how to promote the market, raw material procurement, how to make color plate, how to reduce production cost and improve production efficiency, so that you can put into production in the shortest time and make profits quickly. You can change the formula as needed. And a professional engineer consultant, can long-term tracking technical guidance, remove worries.

Detailed project feasibility analysis report on request.

Product technology for large-scale production of mature technology, technology transfer fee call to discuss.

Sodium free slagging agent for aluminum smelting