
Jiangxi Molybdenum Electrodes: Dual Drivers from a New Fiberglass Base and Rare Earth Electrolysis
WeiBeam · Electrode solutions for high-temperature melting
Jiangxi's electrode consumption is split between fiberglass and rare earths, giving it a distinctive structure. The article explains the electric boosting configuration of Jiujiang electronic yarn tank furnaces, the consumption characteristics of molybdenum crucibles in the Ganzhou fluoride salt system, and the glass-side variables and purchasing rhythm created by the Pingxiang relocation and new photovoltaic lines.
Jiangxi's electrode consumption is often overlooked, split between fiberglass and rare earths. Two entirely different businesses support it: fiberglass, with tank furnace capacity around Jiujiang of about 600,000 tons/year and about 650,000 tons province-wide; and rare earths, with Ganzhou a core production area for medium and heavy rare earths, where metal electrolysis and magnet production consume large quantities of molybdenum crucibles and molybdenum electrodes. Glass accounts for only 40% and rare earths nearly 60%; here molybdenum electrodes and crucibles serve two processes and two customer sets, a structurally distinctive category within regional applications.
Jiujiang: Electric Boosting Demand Driven by Electronic Yarn Formulations
The table below gives a quick overview of the electrode specifications and standards commonly used in this region:
The Jiujiang base has large tank furnaces and focuses on electronic yarn and electronic cloth. Electronic yarn demands high dielectric performance, the glass formulation has a higher boron content, and melting temperature and refining difficulty are both higher than for ordinary E-glass yarn, so the electric boosting ratio rises accordingly. At 650,000 tons of capacity, electrode and molybdenum product demand in fiberglass is considerable. Forehearth temperature and glass melt flow rate are harsher than in flat glass furnaces, and electrode grain size and density must be checked furnace by furnace against the tank design. Jiujiang tank furnaces are mostly one-furnace-multi-line, with frequent formulation adjustments when switching between electronic yarn and ordinary E-glass yarn, so the electric boosting power range needs headroom.
| Item | Reference notes |
|---|---|
| Applicable process | Fiberglass tank furnace electric boosting, tank furnace bushing |
| Common specifications | Rod diameter Φ20-100mm, length 150-1500mm (custom-made to drawings) |
| Applicable standards | YS/T 1312-2019 'Molybdenum Electrodes'; molybdenum rods per ASTM B387 / GB/T 17792; molybdenum plates and discs per ASTM B386 / GB/T 3876 |
Ganzhou: Molybdenum Crucible Consumption in the Fluoride Salt System
Ganzhou ranks among the top in China for rare earth separation and metal smelting capacity. In the fluoride salt electrolytic process for rare earth metals, molybdenum crucibles are widely used as cell linings and material containers; operating temperature is 1,000-1,100°C, fluoride corrosion is severe, and crucible life is typically only 3-6 months. From Jiangxi's perspective, the national rare earth smelting and separation quota issued for 2026 remains at the level of 285,000 tons REO, and Ganzhou and its surroundings hold a relatively high share of domestic mining and separation. At this output scale, local molybdenum crucible and electrode consumption forms the main body of the province's other high-temperature industries.
Pingxiang Relocation and New Photovoltaic Lines: Variables on the Glass Side
The glass side is not without change. Pingxiang's old lines are being relocated and replaced, with new lines under construction in parallel, and a 1,200-ton photovoltaic glass line in the province is largely complete. These projects will release some supporting electrode demand around 2027, but the volume cannot compare with fiberglass and rare earths. In terms of demand structure, container glass, pharmaceutical glass, photovoltaics and float are all present, and glass overall remains a supporting player. Industrial electricity is about 0.50 yuan/kWh, which is manageable for electric melting furnaces but not enough to change the demand structure.
To serve Jiangxi customers, the difficulty lies not in a single product but in understanding two types of working conditions at once: glass electrodes pursue slenderness, high purity and erosion resistance, while rare earth crucibles emphasize large size, thick walls and fluoride corrosion resistance. It is advisable to prepare technical documents for the two product lines separately and avoid using one set of talking points for all inquiries. For tracking, monitor Jiujiang electronic cloth capacity utilization and the monthly execution of Ganzhou's rare earth quota; the two correlate weakly and naturally hedge each other. The neighboring related articles are strong on float glass upgrades, while similar content centers on fiberglass demand.
Note: capacity, consumption, price and other data in this article are compiled from public sources and industry exchanges; statistical definitions and timeliness may change. They are for industry reference only and do not constitute a basis for procurement or investment. Official information released by competent authorities and enterprises prevails.
Frequently asked questions
Which glass-side variable has the more noticeable impact?
To serve Jiangxi customers, the difficulty lies not in a single product but in understanding two types of working conditions at once: glass electrodes pursue slenderness, high purity and erosion resistance, while rare earth crucibles emphasize large size, thick walls and fluoride corrosion resistance.
What does molybdenum crucible consumption in the fluoride salt system specifically involve?
From Jiangxi's perspective, the national rare earth smelting and separation quota issued for 2026 remains at the level of 285,000 tons REO, and Ganzhou and its surroundings hold a relatively high share of domestic mining and separation.
What changes does the electric boosting demand from electronic yarn formulations bring?
Electronic yarn demands high dielectric performance, the glass formulation has a higher boron content, and melting temperature and refining difficulty are both higher than for ordinary E-glass yarn, so the electric boosting ratio rises accordingly.
Note: this article shares general industry and technical information and is not purchasing, investment or legal advice. Specific parameters and results are governed by the mutual technical agreement and factory inspection records.
Standards note: electrodes are controlled to YS/T 1312-2019 Molybdenum Electrodes; molybdenum rods to ASTM B387 / GB/T 17792; molybdenum plate and discs to ASTM B386 / GB/T 3876. Parameter ranges in this article summarise public technical data and engineering practice — actual values vary with furnace conditions and are governed by the technical agreement and inspection records.
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