ما الذي يتنقّل فعلاً
Kazakh uranium is dissolved underground and pumped up as a solution — nothing is blasted and no waste rock is moved. It then passes through conversion, enrichment and fuel fabrication, each of which exists in only a handful of countries and each of which is under international safeguards.
- المادة
- Uranium
- النوع
- Sandstone-hosted uranium recovered in situ, no rock moved at all
- حيث يبدأ
- Kazakhstan — Wellfields on the Chu-Sarysu and Syrdarya basins
خطوة خطوة، وحدًّا حدًّا
Kazakhstan · Southern Kazakhstan wellfields بحوزة Kazatomprom and joint ventures (المنتج الحكومي)
Mining without a mine
A mildly acidic solution is injected through wells into the ore-bearing sandstone, dissolves the uranium, and is pumped back to surface through recovery wells. There is no pit, no shaft and no tailings dam.
لماذا هنا: In-situ recovery only works in permeable, water-saturated sandstone with the right chemistry. Kazakhstan has an unusual amount of it, which is why it became the largest producer.
Kazakhstan · Central processing plant بحوزة Kazatomprom (المنتج الحكومي)
Yellowcake
The uranium is stripped from solution onto resin, eluted and precipitated as U3O8 — a yellow-brown powder — then dried and drummed.
ما الذي جرى للباقي: Note the units. 200 tU is 236 t U3O8 — mixing tonnes of uranium with tonnes of oxide is the classic error in this industry's reporting.
لماذا هنا: Concentrating before transport, and before the safeguards paperwork gets heavier.
Canada · Conversion facility بحوزة Converter (المكرِّر)
Conversion to a gas
Yellowcake is purified and converted to uranium hexafluoride, which becomes a gas just above room temperature — the only practical form for enrichment.
ما الذي جرى للباقي: The fluorine comes from fluorspar. A mineral most people have never heard of is a precondition for nuclear fuel.
لماذا هنا: Only a handful of commercial conversion plants exist worldwide. This is a genuine bottleneck.
France · Centrifuge plant بحوزة Enricher (المكرِّر)
Enrichment
Thousands of centrifuges in cascade separate uranium-235 from uranium-238 by mass, raising the fissile fraction from 0.7% to 3–5%. Most of the feed leaves as depleted tails.
ما الذي جرى للباقي: The great majority becomes depleted uranium — used for radiation shielding, ballast and armour, and otherwise stored.
لماذا هنا: Enrichment is dual-use. Where it exists is a matter of treaty and politics as much as engineering.
France · Fuel fabrication plant بحوزة Fuel fabricator (الشركة المصنّعة)
Pellets and rods
Converted to uranium dioxide powder, pressed into ceramic pellets the size of a fingertip, sintered, ground to tolerance and sealed into zirconium alloy tubes bundled into assemblies.
لماذا هنا: The cladding is zirconium with the hafnium removed — two chemically near-identical metals that had to be separated for this to work at all.
France · Reactor بحوزة Utility (المستخدم النهائي)
About a year of electricity
Loaded into the core. One pellet holds roughly the energy of a tonne of coal. A large reactor's annual load fits in a few shipping containers.
لماذا هنا: Four countries, and every gram inventoried at every handover.
هذا مثال تطبيقي. يتتبّع كمية ابتدائية محددة عبر معدلات عائد واسترداد نموذجية منشورة، مما يجعل النسب قابلة للتحقق؛ وهو ليس سجلاً لشحنة فعلية. وقد جُمعت وقائع المسار — الدول، والعمليات، وأسباب تعذّر معالجة المادة في مكان آخر — من تقارير متاحة للعموم.