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破解“卡脖子”难题 四川宣汉亿吨级深层海相钾盐成功开采

来源:789.scxinxi.com 更新时间:2026年03月15日

  张平 封面新闻记者 罗轩

  近日,四川达州宣汉县深层海相钾盐资源分采分运攻关实验配套装置顺利完成试车,成功提取出高纯度氯化钾产品,标志着我国在深层海相钾盐开发领域攻克核心技术瓶颈,为亿吨级海相钾盐资源规模化开发筑牢技术根基,填补了我国相关领域开发利用的技术空白。

  在宣汉县普光经济开发区的四川巴人恒创钾盐有限公司,只见刚开采出的高纯度钾盐整齐码放,一旁的钾肥生产试验攻关项目正紧锣密鼓推进,机器轰鸣中涌动着创新突破的强劲动能……

四川巴人恒创钾盐有限公司(王小刚 摄)

  “困扰行业多年的‘卡脖子’难题终于破解,我们产出的钾盐品质与纯度均达到高标准要求!”该公司总工程师贾晓华难掩激动,他带领20余名技术人员日夜奋战,历经无数次试验,最终实现技术突破。钾盐资源是保障国家粮食安全的重要矿产资源,主要用于生产钾肥。钾肥作为农作物生长的三大必备元素之一,素有“粮食的粮食”之称,是我国社会稳定、经济发展不可或缺的战略资源。

  此前,国内钾盐开发主要集中于青海、新疆的陆相盐湖,而宣汉普光地区发现的全国首个海相富锂钾资源矿,圈定“新型杂卤石钾盐矿”富矿区面积达179平方千米,估算推断资源量超7.1亿吨,推算可采储量约2.45亿吨,是青海(2.54亿吨)的97%,是新疆(0.29亿吨)的8.5倍。但深层海相钾盐埋藏深、赋存条件复杂,常规开采技术难以实现资源高效分离利用,曾被视为难以动用的“呆矿” 。

成功提取的高纯度钾盐(王小刚 摄)

  据贾晓华介绍,本项目通过富钾多组分卤水逐级提取工艺,从来自宣汉地下矿床的富钾卤水,经过钙镁提取、精制卤水,通过热压蒸发得到氯化钠产品,同时也得到高温富钾母液,高温富钾母液降温得到氯化钾产品。

  宣汉海相钾盐资源的成功开发,是宣汉县打造全国首个深层海相钾盐资源开发利用试验区的关键突破,不仅填补了我国深层海相钾盐开发利用的技术空白,更将推动我国钾盐开发从“陆相依赖”向“海陆并重”转变,更是我国钾盐资源保障体系建设的重要里程碑。

  “下一步,我们将围绕‘十五五’规划战略部署,全力推进深层海相钾盐资源开发利用攻关工程,力争2026年二季度钾肥生产线全面建成投产,实现已取得6宗钾盐普查及富钾卤水项目探矿权局部探转采。同时,大力实施工业倍增行动,聚力攻坚新型钾肥产业,建成一批钾肥及伴生资源利用项目,打造国家新型钾肥生产基地,助推宣汉从‘资源产出地’向‘产业崛起地’转变,为保障国家粮食安全和资源安全贡献宣汉力量。” 四川巴人新能源有限公司董事长鲁明表示。

深度报道 · 四川经济观察

详尽数据和分析:制造业、农业和数字经济的最新走向。

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专栏 · 岁月川味

跟随作者走进老街巷,寻找那些被时间打磨的味道。

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