The primary trading logic in the carbonate lithium market has shifted from a singular focus on spot-futures convergence and inventory depletion to a game of expectation gaps between robust near-term destocking and reassessments of the restart timeline at the Jianxiawo mine. On August 7, the Yifeng County Ecological Environment Bureau confirmed on-site that Jianxiawo remains in a shutdown maintenance state, with no ore loading or crushing operations underway. Subsequently, on August 17, the Yichun City Ecological Environment Bureau published a pre-acceptance public notice (August 17–28) for the mine's environmental impact assessment, indicating procedural progress but no physical supply yet. The probability of meaningful output in Q3 remains extremely low, with low-load ramp-up in Q4 still the base case scenario.

The previously priced bearish narrative of significant Q3 supply from Jianxiawo has been partially invalidated. Combined with consecutive inventory drawdowns in July and August, battery-grade carbonate prices have rebounded from below 140,000 yuan per ton in early August to around 153,000 yuan per ton. However, high warehouse receipts on the GFEX (36,700 lots), increased arrivals of overseas ore at ports, and heightened hedging appetite from lithium salt producers in the 155,000–160,000 yuan per ton range have collectively capped the rebound. Price movements in August are expected to remain rangebound, with Jianxiawo serving as the key swing factor at the upper boundary of the range.

As of August 17, the spot market price for late-session carbonate lithium stood at 152,800 yuan per ton, while the main GFEX contract settled at 153,500 yuan per ton. The monthly average price from August 1–17 was 145,200 yuan per ton, and spot prices have now moved above this average. On the trading front, Mysteel sample traders shipped 2,740 tons on August 17, all directed to downstream buyers. Downstream consumers priced against the LC2609 contract at an average of 152,000 yuan per ton, with pricing closely tracking the futures curve, reflecting a clear pattern of essential restocking rather than speculative accumulation. The spread between LC2609 and LC2701 contracts has narrowed from a low of 6,000 yuan to around 1,000 yuan, with the convergence of deferred-month discounts indicating that extreme pessimism over long-term supply-demand dynamics is easing, allowing modest recovery in far-month pricing. Premiums and discounts for certain spodumene-based and lithium-recycling feedstocks have also firmed slightly compared to earlier levels.

On the upstream side, lithium ore inventories held by traders reached 128,000 tons as of August 14, with port stocks at 243,000 tons. Lithium ore inventories at externally-sourced salt plants stood at 459,000 tons at end-July, with all inventory metrics moving off earlier lows, suggesting the tightest phase for ore supply has passed. Australian spodumene at 6% grade was quoted at 2,240 USD per ton CIF, with processing fees for Australian ore at 18,250 yuan per ton this week. Major lithium salt producers have secured ample raw material supplies for Q3, focusing on supply assurance rather than speculative purchasing, and are strongly inclined to push processing fees higher. If processing fees rise into the critical 19,000–20,000 yuan per ton range, operating flexibility at externally-sourced salt plants would expand notably. Based on rolling 30-day point-price profit calculations for externally-sourced salt plants, current profits stand at 6,369 yuan per ton, while profits calculated at prevailing lithium ore prices are 1,439 yuan per ton. The deviation chart between Mysteel's rolling 30-day average transaction price for lithium ore and carbonate lithium prices shows the blue line (daily carbonate lithium price) has crossed above the red line (rolling 30-day fitted average ore price). As of August 17, the rolling 30-day average transaction cost for externally-sourced salt plants was 146,381 yuan per ton, establishing this level as the current cost support floor.

Turning to salt-end inventories, total stocks across the 207-sample panel stood at 149,020 tons as of August 12, down 6,150 tons week-on-week, or 3.96 percent. Smelter inventories edged up 890 tons to 24,350 tons, indicating no active destocking at the production end. Trader and third-party holdings fell by 7,810 tons to 75,840 tons, reflecting concentrated selling in the circulation segment, while material processors and end-user inventories rose 770 tons to 48,830 tons, showing downstream restocking at lower price levels. The destocking is primarily occurring at traders rather than smelters, suggesting title transfer from the circulation channel to physical demand, though not an explosive surge in consumption. Meanwhile, warehouse receipts have simultaneously increased to 36,700 lots, limiting upside price flexibility.

Both supply and demand are on expansion tracks, with the core tension revolving around the timing mismatch of incremental releases. On the supply side, domestic maintenance capacity is progressively resuming operations after August, the Jianxiawo approval process is advancing but actual output remains uncertain, and incremental supply from Zimbabwe and Australian mines continues to flow, with loose global resource supply expectations being progressively priced in. On the demand side, robust energy storage momentum persists, pre-export tax rebate removal is driving front-loaded export demand, and the iron-phosphate cathode segment is entering its capacity release phase, underpinning demand resilience. The year-end inventory-to-sales ratio for carbonate lithium is expected to decline to relatively low levels, providing medium-term price support. In summary, restart uncertainty at Jianxiawo is likely to generate significant price volatility across September, October, and November, though the near-term August outlook maintains the rangebound view established last week.

This article is for reference only and does not constitute investment advice. Market conditions carry risks; investment decisions should be made with caution.