Solution for Nonferrous Metals Industry

First,Solution for Zinc Oxide Rotary Kiln Refractory

1. Zinc Oxide Rotary Kiln Total Contract Service 

2. Design Principle of Calcined Zinc Oxide Rotary Kiln 

     The working principle of zinc oxide rotary kiln is the whole process and principle of calcining zinc and treating zinc containing materials. Generally, zinc oxide rotary kiln is used to treat zinc-containing filter cake. The zinc in the cake mainly exists in the form of zinc ferrite, oxide and sulfate. Under the high temperature of the zinc oxide rotary kiln, the zinc ferrite and solid carbon are reduced to zinc metal, while the sulfate of zinc, lead and cadmium is also reduced, and the well is volatilized in the form of sulfide and gold. The metal reduced and volatilized from the solid phase is re-oxidized under the action of the kiln atmosphere and is mainly produced in the form of oxides. 

     Zinc oxide rotary kiln for zinc oxide calcining operation, when the temperature of the rotary kiln reaches 700 degrees, the impurities such as chlorine and sulfur in the zinc oxide will be vaporized, so as to achieve the purpose of purifying the zinc oxide. Zinc oxide after 900-1200° high temperature calcination, showing light yellow, its melting temperature is 1920 degrees, want to be purified by vaporization, the use of rotary kiln calcination is very difficult, so can only use rotary kiln to calcinate secondary zinc oxide. 

3. Optimized Configuration of Refractory Materials for Calcined Zinc Oxide Ø3m*48m Rotary Kiln 

4. Photo of the Scene 

5. Necessary Conditions for Construction  

① The site construction plane has been available, water and electricity have been connected, all kinds of temporary facilities for construction have been set up, construction machinery and tools have been tested and can be used normally. 

② The refractory materials in the kiln are installed in stages, the installation of auxiliary equipment and the opening position are qualified, and the construction can only be completed after the signing of the process handover order. 

③ Refractory materials and refractory products shall be inspected according to relevant current standards and design requirements, and shall meet the design requirements. 

④ The kiln mouth and kiln tail refractory castable shall be installed in place and passed the inspection. 

⑤ All kinds of resistant materials have been classified and stacked in the resistant material warehouse and the designated position according to the material, model and the order of use.

⑥ The crane or masonry transport equipment in the plant can cooperate with the furnace construction.  

6. Construction Technical Requirements 

① The castable construction template should be accurately supported, in line with the design requirements, firmly supported, tight joints, no leakage, castable vibratory compaction, no holes; 

② The first layer of bricks in each position must be laid from the same vertical plane; Between bricks and bricks must be full of high temperature cement; 

③ The last piece of door brick of each layer, if it needs to be cut, the brick must be at least half of the original brick, and the upper brick of the brick processing must be a whole brick. 

Second,Solution for Refractory Materials for Induction Kiln

1. Induction Kiln General Contracting Services

2. Product Introduction

2.1 Refractories for Medium Frequency Coreless Induction Kiln

Acid Lining Material

Al 2 O 3 Based Lining Material For Coreless Induction Furnace

Neutral Lining Material

Al 2 O 3 Based Lining Material For Coreless Induction Furnace

Alkaline Lining Material

MgO Based Lining Material For Coreless Induction Furnace

Coil Cement

     This product is made of corundum sand and powder as the substrate, using pure calcium aluminate cement as the binder, adding an appropriate amount of compound additives and so on. With high refractoriness, good construction performance and insulation, play a role in protecting the coil from metal solution corrosion; For the medium frequency furnace with ejecting mechanism, it has the function of guiding and preventing coil chafing; It can prevent coil turn short circuit or discharge resulting in excessive impulse current to burn the thyristor.

Coil Grouting Material

      Coil grout is composed of high quality corundum and spinel as the main raw materials, and is prepared by strict particle ratio and special mixing process, with excellent fluidity and suspension. This product is a slurry refractory material, does not contain conductive substances, and has excellent protection for the coil. It is fully suitable for the requirements of high voltage and high current new medium frequency furnace. Effectively avoid the malpractice of manual plastering.

Patching Material

     This product is a kind of Al 2 O 3 plastic, has excellent plasticity and adhesion and excellent resistance to hot metal infiltration ability, after curing has a high strength. After manual repair and simple baking, it can be put into use. It is suitable for repairing the collar seal, nozzle and lining of medium frequency furnace.

Furnace Cover Castable

      The castable of the furnace cover of intermediate frequency furnace is made of special grade bauxite, fused corundum and many kinds of additives by dry mixing. The castable has the characteristics of good insulation, high strength, good thermal shock stability, can effectively prevent coil short circuit ignition, in 5 tons to 60 tons of different tonnage medium frequency furnace use, has excellent use effect.

2.2 Refractory Material for Iron (Steel) Ladle

      This product is made of corundum, mullite or high-alumina bauxite as aggregate, corundum powder and silicon carbide as matrix, calcium aluminate cement as the binder, and an appropriate amount of composite additives and other premixes. It has good thermal shock stability, erosion resistance and slag erosion resistance, and is suitable for pouring molten iron transfer ladles and furnace linings for pouring ladles.

2.3 Lost Foam Coating

3 Customer Service

4 Look Forward to the Future

Third,Solution for Refractory Materials for Mineral Thermal Kiln

1. Mineral Thermal Kiln General Contracting Services

2. Design Principles of Refractory Materials for Mineral Thermal Kiln

     Mineral Thermal Kiln is a high-temperature smelting equipment, and the furnace lining is mainly made of refractory masonry. The normal operating temperature in the furnace is about 1540 °C, and the maximum can exceed 1600 °C, the furnace lining needs to withstand the burning of the electrode arc in the production process, the violent mechanical erosion of the high-temperature melt, the serious erosion of the slag and the periodic fluctuation of the furnace temperature.

3. Optimization Configuration Scheme for Refractory Materials of 36000kva Mineral Thermal Kiln Lining

4. Product Display

5. Conventional Refractory Configuration List

Note: The specific quantity needs to be configured and approved according to your company's design drawings

6. Bricklaying Scheme for Refractory Materials of 36000kva Mineral Thermal Kiln Lining

6.1 Basis for Compilation

(1)Construction blueprint provided by Changsha Hengan Engineering Technology Co., LTD;

(2)Code for Construction and Acceptance of Industrial Furnace Masonry Works GB50211-2004;

(3)Industrial furnace masonry engineering quality acceptance Code GB50309-2007;

(4)Construction Law of the People's Republic of China;

(5)The company has successful experience in the construction of many kinds of ore thermal electric furnaces and large, medium and small repairs in steel and non-ferrous metallurgy enterprises all over the country.

6.2 Follow the Principles 

(1)Take science and technology as the guide, adopt new technologies, ensure the contract duration and quality, and organize construction according to the rules and regulations of the state and the metallurgical industry;

(2)Coordinate the overall situation, reasonably arrange the construction process and construction methods, organize cross-parallel flow operations, and ensure safe construction.

7. Construction Process

      Furnace Top Castable Construction → Furnace Bottom Laying Material Construction → Furnace Bottom Ramming Material And Furnace wall Masonry Cross Construction

8. Oven Curve

9. Factory Production Equipment Display

10. Testing Equipment