Slag leaching device for calcium extraction, and method for using same
By designing a leaching reactor and filtration device, the efficient extraction of calcium from steel slag and carbide slag was achieved, solving the problem of low resource utilization and reducing environmental pollution and treatment costs.
WO2026138755A1PCT designated stage Publication Date: 2026-07-02YUANCHU TECH (BEIJING) CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- YUANCHU TECH (BEIJING) CO LTD
- Filing Date
- 2025-12-23
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
The low utilization rate of calcium resources in steel slag and calcium carbide slag leads to environmental pollution. Existing treatment methods occupy land and pollute soil and water sources.
Method used
Design an apparatus comprising a ore-dissolving reactor, an ammonium salt storage tank, and a slurry filtration device. Through a stirring assembly, a temperature control assembly, and a scraper filter, the ammonium salt solution and solids are fully reacted, and the slurry is separated into solid and liquid components, generating recyclable ammonia and leachate.
Benefits of technology
This improved the calcium leaching rate, reduced processing costs, enabled efficient recycling of calcium resources, and reduced environmental pollution.
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Smart Images
Figure CN2025144523_02072026_PF_FP_ABST
Abstract
Provided in the present invention are a slag leaching device for calcium extraction, and a method for using same. The device comprises a slag leaching reactor, an ammonium salt storage tank and a slurry filtering device, wherein the slag leaching reactor comprises an upper chamber, and a stirring assembly and a temperature control assembly, which are arranged in the upper chamber; the slurry filtering device comprises a lower chamber, which is in communication with the upper chamber, and a scraper-type filtering device which is configured to separate a slurry inflow into a leachate and solid residue; and the ammonium salt storage tank device is configured to collect ammonia generated from a slag leaching reaction and a resulting solution obtained after calcium has been extracted from the leachate, so as to generate an ammonium salt solution having a preset pH. In the embodiments, the stirring assembly and the temperature control assembly can increase the rate of the slag leaching reaction; the scraper-type filtering device can separate a slurry into a leachate and solid residue, thereby facilitating separate collection; and the ammonium salt storage tank device can ensure the recycling of ammonia and the resulting solution obtained after calcium has been extracted from the leachate, thereby reducing costs.
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