On June 27, the Natural Resources Bureau of Maoming City, Guangdong Province publicized the income assessment report on the transfer of sea sand mining rights for backfilling in CB22-01 mining area in the southwest sea area of Fangji Island, Dianbai District. The sea sand mining project has 38.3735 million cubic meters of raw ore resources (including mud), 30.8451 million cubic meters of sea sand resources for backfilling, and 11 million cubic meters of raw ore per year. The service life is 3 years (the production period is 2.76 years), the preparation period is from April to June 2023, and the production period is from June 2023 to March 2026. The appraisal value of the transfer income is 925.5407 billion yuan (about 930 million yuan).
According to statistics, since this year, Guangdong has planned to sell 16 sea sand mines, all of which are currently in the EIA stage. Among them, there are 3 cases in Zhuhai, the resource reserve is not clear; there are 6 cases in Shantou, the resource reserve is about 136 million cubic meters; there are 6 cases in Zhanjiang, the resource reserve is about 47.8 million cubic meters; there is 1 case in Maoming, the resource reserve is about 39 million cubic meters. After calculation, the reserves of these 16 sea placer resources have exceeded 220 million cubic meters.
In addition, the sea sand mining project in JH21-08 block of Shanwei, Guangdong, was formally exploited in late May this year. On December 13, 2022, Shanwei Investment Holding Co., Ltd. won the project for 1.912 billion yuan, with resource reserves of 34.8468 million square meters, which will be sold for 2.2 years.
According to the transfer income evaluation report, the mining area of the project is 2.2 square kilometers, the mining recovery rate is 90%, the ore dilution rate is 0%, the product plan is backfilling sand, the output rate of sea sand products is 84.27%, and the sales price of mineral products excluding tax is 141 yuan/m3. In addition, there are Shuidong Port, Bohe New Port, Bohe Port, Jeddah Port and other ports along the coast of the mining area, which are about 30 kilometers away from Shuidong Port, with convenient transportation.
The project plans to adopt the suction (jet) mining process to mine the sea sand. The sand dredger uses the jet pump to suck the mixture of water and sand with high sand content into the cabin of the sand dredger. The impurities in the sea sand are removed by the grizzly screen installed on the deck, and then the finished sea sand that meets the backfill sea sand index is separated by the screening-hydraulic classification beneficiation process.
In addition, the project intends to supply sand for Guangdong-Hong Kong-Macao Greater Bay Area and major national strategic projects in Guangdong Province, which can be used as backfill sand for the project. The mined sea sand can also be used for civil construction and infrastructure construction, but it needs to be desalinated to meet the standard of construction sand.
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