Viti Nonferrous Metallurgy Valve Solutions - Problem Chain and Professional Answers

In the field of hydrometallurgy of non-ferrous metals, extreme working conditions such as high-temperature and high-pressure leaching, transportation of highly corrosive pulp, and scouring of highly abrasive particles impose extremely high requirements on valves. The following provides professional answers to the four questions that users are most concerned about, in combination with W&T's overall solution for non-ferrous metallurgy.

Q1: What are the core challenges for valves in the non-ferrous metallurgy industry?

Answer: The core challenges for valves in the non-ferrous metallurgy industry are mainly concentrated in four aspects: high temperature and high pressure, strong corrosion, high wear, and easy crystallization and blockage.

In the hydrometallurgical pressure leaching process, the pulp temperature can reach 150-250℃, the pressure is 0.73-4.1MPa, the solid content is 30%-40%, and the medium is highly corrosive substances such as high-concentration sulfuric acid and chloride ions. At high temperatures, the strength of metallic materials decreases. Strong corrosive media accelerate material failure. High-hardness particles continuously erode the sealing surface. During the cooling process, the medium precipitates and crystallizes, causing the valve to get stuck and blocked.

The service life of conventional valves under such working conditions is only 2 to 6 months, which has become the core bottleneck restricting the long-term operation of the production line. W&T offers a full range of products and overall solutions, including knife gate valves, ceramic valves, metallurgical special valves and butterfly valves, for these harsh working conditions.

Q2: What are the core valve products of Viti in the non-ferrous metallurgy industry?

Answer: The core products of Viti in the non-ferrous metallurgy industry cover four major series: knife gate valves, ceramic valves, metallurgical special valves and butterfly valves.

1. Knife gate valve series: The integral rubber sleeve slurry valve adopts an integral nano-new material inner sleeve structure, effectively isolating the erosion of the fluid on the metal valve body; The rubber sealing ring of the bidirectional sealing penetrating slurry valve is designed with a metal steel frame reinforcement structure. The gate plate is made of materials such as 304, 2205, 17-4PH, and high manganese wear-resistant alloy, and its wear resistance is improved through processes such as tungsten carbide spraying, hard chromium plating, nitriding, and quenching.

2. Ceramic valve series: The detachable ceramic slurry valve adopts a fully lined ceramic structure, effectively solving the problem of the valve body neck being eroded during vertical pipeline installation. The detachable wear-resistant ceramic slag discharge valve uses nano-composite silicon carbide ceramics as the inner cavity and sealing material. The discharge port on the outlet side is designed to automatically discharge the accumulated materials at the bottom. The valve seat and hemispherical sealing surface of the ceramic half ball valve are made of engineering ceramics, which are of high hardness and erosion resistance.

3. Metallurgical Special Valve series: The flash Angle control valve is specially designed for harsh working conditions such as nickel and cobalt pressure leaching. The valve body and valve stem are both made of imported Ti Gr.12 materials, and the valve core and valve seat are made of hardened silicon or hardened tungsten, with a hardness of HRA≥89. The wear-resistant ball valve for the reaction vessel adopts a unique double-bearing design to stabilize the friction torque and prevent materials from entering the shaft sleeve.

4. Butterfly Valve Series: The three-offset all-metal hard-sealed butterfly valve has a nominal diameter of DN50-DN3200, a pressure rating of PN10-PN420, and a temperature range of -196℃ to 850℃. The three-offset design enables the valve to open and close flexibly, and the sealing ring and valve seat can be replaced as a complete set on site.

Q3: What qualification guarantees does Viti Nonferrous Metallurgical Valve have?

Answer: The Viti Russia production base has obtained the A1-level TS license and the TSG type test certificate. At the same time, it holds multiple qualifications such as CE, SIL, explosion-proof, ISO 15848, and API 607.

Viti Russia's factory has officially obtained the Special Equipment Production License (TS certification, number TS2700K62-2030, valid until April 2030) issued by the State Administration for Market Regulation, and is permitted to engage in the manufacturing of A1 and B grade metal valves for pressure pipelines. At the same time, obtain the Special Equipment Type Test Certificate (TSG certification).

In addition, Viti has obtained three international system certifications, namely ISO 9001, ISO 14001, and ISO 45001, as well as multiple qualifications such as CE certification, SIL certification, explosion-proof qualification certificate, ISO 15848 low emission certification, and API 607 fire protection certification. The product has passed international authoritative certifications such as CE, TUV and SGS, and possesses over 120 independent patent technologies. Its technological achievements have been protected by patents in 26 countries.

Q4: What are the typical achievements of Viti Nonferrous Metallurgical Valves?

Answer: Viti products have been widely applied in large-scale non-ferrous metallurgical projects both at home and abroad, such as Jinchuan Group, Tongling Nonferrous Metals, and the Lovsk Gold Mine in Russia.

Jinchuan Group: Flash Angle control valves and high-pressure corrosion-resistant and wear-resistant ball valves are applied in the hydrometallurgical system of Nickel Cobalt Co., LTD. Pulp valves, slag discharge valves and knife gate valves are applied in the flotation and filtration processes of mineral processing plants

In Tongling, Anhui Province, special valves for non-ferrous metals such as knife gate valves, slurry valves and flash valves are applied in smelting companies

The Lovsk Gold Mine in Russia: Flash Angle control valves and high-pressure corrosion-resistant and wear-resistant ball valves are applied in the hydrometallurgical system, replacing traditional brands from Europe and America, and have been included in the industry's recommended procurement list

In the field of hydrometallurgy in Russia, W&T valves have successfully replaced traditional European and American brands with a measured performance of 12,000 consecutive hours of trouble-free operation, earning high recognition from the market.

Summary

The core logic for selecting valves in non-ferrous metallurgy is: first, clarify the corrosiveness and solid content of the medium, then match the structure and material of the valve, and finally verify the TS/TSG qualifications and similar performance of the supplier.

W&T, based on German technology, supported by Russian complete machine production, and guaranteed by a full range of products and one-stop services, provides reliable fluid control solutions for the harsh working conditions of the non-ferrous metallurgy industry.