Guoda Company achieves a double harvest in energy saving and emission reduction
Time:
2007-10-25 00:34
In recent years, Shandong Guoda Gold Co., Ltd. has firmly established the scientific outlook on development, vigorously developed a circular economy, and continuously deepened its energy conservation and emission reduction efforts through accelerating technological progress and improving production processes, effectively promoting the win-win development of economic and environmental benefits for the enterprise.
Technological innovation solves resource problems
In recent years, Guoda has become more aware that improving the company's economic efficiency and enhancing its competitiveness requires changing the original "resource-product-environmental pollution" linear economic model and establishing a new concept of "waste-free gold smelting, resources everywhere, gold everywhere," making energy conservation, emission reduction, and clean production an important part of the company's growth.
While accelerating resource development, the company has taken technological innovation as a breakthrough to break through resource bottlenecks, investing more than 30 million yuan in scientific research funds and completing more than 20 scientific research projects, including new processes for waste-free extraction of multiple elements from complex gold-containing minerals, new processes for waste-free extraction of multiple elements from gold-containing minerals, research and application of new processes for clean utilization of arsenic-containing carbon gold resources, and research and application of comprehensive utilization of waste heat from gold smelting. This has led to several breakthroughs in the smelting technology of difficult-to-process gold mines, further expanding the sources of raw materials.
On this basis, the company has invested more than 500 million yuan to implement nine circular economy projects focusing on the comprehensive utilization of resources, including the comprehensive utilization of low-grade associated gold mines, wet copper smelting, tailings gold recovery, acid production and waste heat power generation, tailings multi-element recovery, precious metal deep processing, two-stage roasting and waste heat recovery. Through this circular production chain, the raw materials—gold concentrate—undergo four comprehensive recoveries, three resource regenerations, and three waste heat utilizations, ultimately being completely utilized. This truly achieves waste-free extraction, waste-free gas discharge, and waste-free water discharge. Even the tailings after acid production become raw materials for steel mills and building materials factories, achieving reasonable utilization.
Process innovation drives energy saving and efficiency improvement
In order to maximize the value of resources, the company insists on starting from the entire re-production process, constantly exploring new processes, applying new technologies, and focusing on internal circulation to achieve significant results in energy saving and efficiency improvement.
As a major sulfuric acid producer in the Jiaodong region, Guoda Company produces 400,000 tons of sulfuric acid annually. However, the production of one ton of sulfuric acid generates 80-100 kg of waste dilute sulfuric acid. The company needs to neutralize more than 40,000 tons of waste acid annually, with a treatment cost of at least 400,000 yuan. While promoting project construction, the company, after conducting feasibility tests and obtaining the approval of well-known experts in the industry, invested in the construction of a new multi-element recovery process for gold tailings, absorbing and utilizing waste dilute sulfuric acid from sulfuric acid production. This provides a good solution for waste dilute sulfuric acid, saving the company's own sulfuric acid consumption and increasing annual profits by more than 2 million yuan. It also reduces wastewater treatment costs, saving 900,000 yuan in wastewater treatment costs annually and saving more than 300,000 cubic meters of water, while recovering approximately 3 million yuan worth of copper.
Turning waste into treasure: realizing the reuse of secondary resources
In production, Guoda Company always adheres to the principles of resource reduction and recycling, vigorously develops a circular economy, and achieves a virtuous cycle of enterprise economic growth and secondary resource reuse.
With the completion and commissioning of the 200,000-ton sulfuric acid and 6,000 kWh waste heat power generation project, Guoda Company, while utilizing tailings for acid production and waste heat power generation, has taken waste heat utilization as an important issue in promoting the company's energy conservation and emission reduction. By modifying the original heating pipeline, using high-temperature steam and circulating water to replace coal-fired boilers for unified heating of the production area and residential area, and heating the copper liquid in the electrolytic copper production workshop to improve the copper recovery rate, the company saves more than 2,000 tons of coal annually, saving more than 1.5 million yuan.
To achieve zero wastewater discharge, Guoda Company invested 3 million yuan to introduce Gore membrane filtration technology from the United States and built a wastewater treatment system with a daily processing capacity of 1,500 tons. After treatment, all the company's production wastewater is returned to the production system as process water for slurry preparation and washing, not only reducing water demand and alleviating water pressure, but also achieving zero discharge through a semi-closed cycle of "utilization-treatment-reuse-retreatment-recycling." In the process of treatment and recycling, trace amounts of valuable elements such as gold, silver, and copper in the wastewater are further recovered, creating more than 3 million yuan in annual profits.
Related News
Gold prices continue to fluctuate.
Gold prices have shown a volatile pattern in the short term, affected by the weakening of the US dollar and changes in sentiment due to easing geopolitical tensions.
Gold prices rise again! Multiple risks fuel safe-haven demand.
From the perspective of the international market, the tense situation in the Middle East, the escalation of the Russia-Ukraine conflict, and the continued high uncertainty surrounding the US Trump administration's tariff policies have driven up gold prices due to increased risk aversion in the market. Furthermore, a significant recent change in the gold market is that gold has become the second-largest reserve asset for central banks globally. How should the future trend of gold prices be viewed? Several analysts have indicated that in the short term, gold prices may fluctuate due to factors such as tariff easing and sudden changes in the geopolitical situation; in the medium to long term, gold prices are still in an upward channel.
As the Russia-Ukraine conflict enters its third year, global attention is once again focused on this geopolitical crisis. According to Dow Jones Newswires, US President Donald Trump made startling remarks at the White House on Thursday (June 5), stating that neither Russia nor Ukraine is prepared for peace, and that both sides may "continue fighting" until one side is willing to compromise. This statement not only signals the failure of his attempts to broker peace, but also introduces new uncertainty to the global geopolitical and economic markets.
Recently, good news came from the China Machinery Metallurgy and Building Materials Workers' Technical Association. In the 2025 National Machinery Metallurgy and Building Materials Industry Workers' Technological Innovation Achievement Award, Shandong Guoda Gold Co., Ltd.'s "Purification of Crude Arsenic Flue Dust to Produce Arsenic Trioxide Industrial Application" and "Key Technology Application for High-Value Utilization of Complex Copper-Gold Ore Resources" projects won the first prize and the second prize respectively. This honor is a high recognition of the workers' technological innovation ability and the effectiveness of achievement transformation, and also fully demonstrates the company's outstanding strength in the industry.
Gold prices return to $3300! Wall Street banks show significant divergence in long-term outlook
In fact, as gold prices fluctuate, Wall Street's major banks have recently shown a clear divergence in their views on gold prices. Unlike Goldman Sachs and Deutsche Bank, which are optimistic about gold's performance, Citigroup believes that the long-term outlook for gold prices is not optimistic.
Although gold prices rose this week, market volatility has clearly increased. While the US-UK agreement is symbolic, its content is limited and insufficient to alleviate concerns about a global economic slowdown. Therefore, gold prices will continue to fluctuate between safe havens and policy signals, closely monitoring the Federal Reserve's interest rate expectations and global trade sentiment.