Oresmelt - Introduction to the Quality of Electrolytic Copper Plate Products

Oresmelt is located in the B17 Industrial Zone of Islamabad, the capital of Pakistan. It relies on the advanced electrolytic refining process and technology team led by Professor Wu from Zhejiang University in China to produce high-quality electrolytic copper plates. The company comprehensively benchmarks international first-class quality standards and has established a full process quality assurance system covering raw material inspection, process control, and finished product testing, ensuring that each batch of electrolytic copper plates has ultra-high purity, stable and consistent physical and chemical properties, and excellent processing adaptability, providing reliable copper based raw materials for Pakistan's local and China's high-end manufacturing industry.

1、 Product core indicators: ultra-high purity, superior to international standards

The main grade of the electrolytic copper plate produced by the company is stably controlled at 99.99% or above, with a typical value of up to 99.995%, fully meeting the requirements of the London Metal Exchange (LME) A-level cathode copper delivery standard and the Chinese national standard GB/T 467-2010 for high-purity cathode copper (Cu-CATH-1).

In terms of impurity control, the company implements strict internal control standards for key harmful impurity elements:

Conventional control of impurity elements in the industry (ppm) Oresmelt internal control standard (ppm)

Lead (Pb) ≤ 5 ≤ 2

Iron (Fe) ≤ 10 ≤ 3

Arsenic (As) ≤ 5 ≤ 1.5

Antimony (Sb) ≤ 4 ≤ 1

Bismuth (Bi) ≤ 2 ≤ 0.6

Sulfur (S) ≤ 15 ≤ 5

Through precise electrolyte purification, synergistic regulation of additives, and optimized current density distribution, the total impurity content in the company's products can be controlled below 30 ppm, significantly exceeding the LME standard requirement of 65 ppm upper limit. The extremely low impurity content endows electrolytic copper plates with excellent conductivity (≥ 101% IACS) and thermal conductivity, providing high-quality raw materials for downstream deep processing.

2、 Surface quality and physical properties: dense and smooth, processing friendly

The company adopts the high current density electrolysis process and multi additive collaborative control technology developed by Professor Wu's team at Zhejiang University. The cathode copper plate produced has the following outstanding physical characteristics:

·Smooth and flat surface: no pores, no dendritic crystals, no grains, both sides present a uniform rose red metallic luster.

·High density: Copper plate has a fine crystalline structure, no internal cracks or looseness, and is not easily cracked during processing.

·Uniform thickness: The thickness deviation of the entire board is controlled within ± 0.5 mm, which facilitates subsequent cutting, packaging, and transportation.

·Easy to process: It has good cold bending performance and ductility, suitable for the production of rolled copper rods, copper wires, copper foils, and various copper alloy products.

The company is equipped with an online surface quality inspection system, which automatically performs optical recognition on each cathode copper plate, eliminates products with obvious surface defects, and ensures the consistency of the appearance quality of the copper plate when it leaves the factory.

3、 Quality stability: fully controlled throughout the process, consistent batches

Relying on the full process quality control system designed by the technical team of Zhejiang University, every step of Oresmelt from raw material storage to finished product delivery is strictly controlled.

Raw material control: The incoming copper concentrate and crude copper are both detected by atomic absorption spectroscopy (AAS) or inductively coupled plasma optical emission spectroscopy (ICP-OES), and the copper grade and more than ten impurity elements are quantitatively analyzed to ensure that the raw materials meet the requirements for electrolytic process access.

Process control: A distributed control system (DCS) is deployed in the electrolysis workshop to monitor and automatically adjust core parameters such as electrolyte temperature (58-62 ℃), copper ion concentration (40-50 g/L), sulfuric acid concentration (160-200 g/L), cell voltage (0.2-0.3 V), and current density in real-time. Additives (bone glue, thiourea, hydrochloric acid) are precisely added by an automatic dosing device according to the set program, eliminating human operation fluctuations.

Finished product testing: Each batch of electrolytic copper plates is sampled and tested according to national or international standards, including main grade (electrochemical method or ICP method), full analysis of impurity elements, surface quality, thickness, and appearance dimensions. Test data input into the quality management system to achieve full process traceability.

Through the operation of the above system, the company has achieved a quality index difference rate of less than 2% between batches, providing customers with long-term stable and consistent performance high-purity electrolytic copper plates.

4、 Excellent application performance: serving high-end manufacturing

Oresmelt electrolytic copper plates are widely used in the following fields due to their ultra-high purity and excellent physical properties:

·Manufacturing of wires and cables: High conductivity ensures low power transmission losses and can be used for high-voltage cables, winding wires, and special conductors.

·Electronic appliances: suitable for high-precision connectors, lead frames, relay contacts, and other electronic components that require strict copper purity.

·New energy vehicles: As the basic material for lithium battery copper foil raw materials and copper materials for charging piles, it meets the quality requirements of the rapidly growing new energy industry.

·Equipment manufacturing: used for industrial components such as radiators, heat exchange tubes, conductive busbars, etc. Its good processing performance can adapt to various molding processes.

·Alloy smelting: As a high-purity base material, it is used to produce copper alloys (such as brass, bronze, white copper) and other copper containing functional materials.

5、 International trade qualifications and customer recognition

In addition to meeting the domestic market demand in Pakistan, the company's products have been steadily exported to China, the world's largest copper consumer market. Chinese customers include copper rod processing enterprises, copper foil manufacturers, and non-ferrous metal traders, who highly praise the purity, packaging, and delivery time of Oresmelt products.

To meet the needs of international trade, the company's electrolytic copper plates are packaged in standard bundles: each bundle weighs about 2.5 tons, tied with galvanized steel strips, wrapped in moisture-proof plastic woven bags or directly loaded in containers. Each copper plate is clearly labeled with furnace number, batch number, net weight, and production date, and a quality certificate (including chemical composition, physical properties, and testing methods) is provided with the goods. The company can provide customized sizes or surface treatments (such as trimming and milling) for copper plates according to customers' special requirements.

6、 Continuous improvement and quality commitment

Oresmelt regards product quality as the lifeline of the enterprise. Under the guidance of Professor Wu's technical team at Zhejiang University, the company has established a monthly quality review mechanism, regularly analyzing production process data and customer feedback, and continuously optimizing electrolysis process parameters and additive formulations. The company plans to obtain ISO 9001 quality management system certification and ISO 14001 environmental management system certification within one year of production, and carry out LME registered brand certification to further enhance the international credibility of its products.

Quality Commitment:

·Products with a main grade below 99.95% are not allowed to leave the factory;

·Products with obvious defects in appearance (holes, nodules, damaged edges and corners) are not allowed to leave the factory;

·Batches that have not undergone third-party review and testing are not allowed to leave the factory.

Oresmelt (Pvt) Ltd is committed to building a world-class high-purity electrolytic copper production base in Pakistan with China's top electrolytic technology and management wisdom. We firmly believe that excellent and stable product quality is fundamental to winning customer trust and market respect. Choosing Oresmelt means choosing reliability, purity, and professionalism.