Kemikali & Vifaa vya Madini Ltd

20/07/2026

Huduma Zetu kwa Kila Sekta:🏫 Mashuleni: Reagents zote za majaribio ya kisayansi (Chemistry, Biology & Physics practicals) na vifaa vya maabara.🏥 Hospitalini: Reagents za maabara za kisasa (Lab diagnostics), kemikali za usafi, na vifaa tiba.⛏️ Migodini: Kemikali zote za uchenjuaji madini (Gold leaching/processing chemicals) na reagents za kupimia miamba.🎯 Kwanini Utuchague Sisi?Bidhaa zenye ubora uliothibitishwa.Uhakika wa usalama wa kemikali.Bei za ushindani sokoni.Uwezo wa kusambaza mzigo popote ulipo.📞 Mawasiliano ya Haraka:Piga/WhatsApp: 0762820999Kemikali Vifaa — Ubora na Uaminifu kwa Maendeleo yako!

Watch, follow, and discover more trending content.

17/07/2026

KAZI YA CHOKAA KATIKA UCHENJUAJI WA DHAHABU
Hydrated lime (chokaa iliyochujwa/iliyotiwa maji) hutumika kwenye kuchenjua dhahabu k**a kizuizi cha asidi (pH regulator) ili kuzuia kutengenezwa kwa gesi ya sumu ya namna ya Hydrogen Cyanide (HCN) wakati wa uchenjuaji kwa njia ya kemikali ya Cyanide.

Hapa kuna muundo rahisi wa jinsi chokaa hii inavyofanya kazi, faida zake, na jinsi ya kuitumia kwa usalama.

Kazi Kubwa ya Hydrated Lime

Kudhibiti kiwango cha pH: Inapandisha na kushikilia pH ya maji na tope la dhahabu (slurry) kuwa juu ya pH 10.5 hadi 11.

Kuzuia gesi ya sumu: K**a pH ikishuka chini ya 9, kemikali ya Sodium Cyanide hugeuka kuwa gesi hatari ya HCN ambayo inaweza kuua wafanyakazi papo hapo.

Kuokoa kemikali: Inazuia uharibifu wa mapema wa kemikali ya Cyanide, hivyo kupunguza gharama za ununuzi wa madawa ya kuchenjua.

KEEMIKALI VIFAA TUNAKUUZIA CHOKAA KWA BEI NAFUU NA RAFIKI SANA.
Jinsi ya Kuitumia (Hatua kwa Hatua)

Pima pH ya tope: Kabla ya kuweka Cyanide, pima kiwango cha uasidi wa tope la mawe yaliyosagwa.

Changanya Hydrated Lime: Ongeza chokaa kidogo kidogo kwenye tanki la uchenjuaji (leaching tank au vat).

Hakikisha pH imefika 10.5+: Tumia karatasi za kupimia (pH indicator strips) au kifaa cha kidijitali (pH meter) kuhakikisha kiwango kimefikiwa.

Weka Cyanide: Baada ya pH kuwa salama na imara, ndipo kemikali ya Cyanide inaruhusiwa kuwekwa ili ianze kuyeyusha dhahabu.

Tofauti ya Hydrated Lime na Chokaa ya Kawaida

Aina ya ChokaaJina la KikemiaKazi Kwenye DhahabuHydrated LimeCalcium HydroxideInafaa sana: Inayeyuka haraka na kupandisha pH kwa usahihi bila kuacha mabaki mengi magumu.Quicklime / Agricultural LimeCalcium Oxide / Calcium CarbonateHaishauriwi: Inachukua muda mrefu kuyeyuka na inaweza isidhibiti pH kwa haraka, jambo ambalo ni hatari.

Tahadhari za Kiusalama

Moshi na Vumbi: Vaa barakoa nzito (respirator) kwani vumbi la chokaa hii linaunguza mapafu na mfumo wa upumuaji.

Ulinzi wa Ngozi na Macho: Vaa miwani ya usalama (goggles) kajili ya macho na glavu ngumu; chokaa ikichanganyika na jasho mwilini inaunguza ngozi.

Ungependa kujua kiwango sahihi (uwiano) cha chokaa kwa tani moja ya kifusi, au unahitaji ushauri wa wapi unaweza kununua kemikali hizi kwa usalama nchini Tanzania kwa kuwasiliana na Vifaa Ltd
+255762720999.

Watch, follow, and discover more trending content.

17/07/2026

Ammonia Solution Uses
Metal Leaching and ExtractionAmmonia solution serves as a selective lixiviant (a liquid medium used to extract metals via dissolving) to recover base and precious metals from complex, low-grade, or refractory ores.Copper, Nickel, and Cobalt: Ammoniacal leaching is highly effective for processing these metals because it dissolves the targeted minerals while leaving unwanted gangue (such as iron) behind.Gold and Silver: Ammonia-cyanide leach systems are utilized on refractory ores (like sulfide or carbonaceous ores) to selectively recover gold while keeping copper interference to a minimum.Precipitation & Recovery: After the metals are dissolved in the ammonia solution, they are recovered through processes like electrowinning or chemical precipitation.2. Mineral FlotationDuring ore processing, minerals must be separated from waste rock. Ammonia solution is heavily used to adjust and buffer the pH levels of the flotation slurry.Creating the correct alkaline environment helps flotation reagents (collectors and frothers) stick selectively to valuable minerals (like copper, zinc, and nickel sulfides).Proper pH control maximizes recovery rates and improves the purity (grade) of the final mineral concentrate.3. Explosives ManufacturingAmmonia is the foundational building block for manufacturing ammonium nitrate, which is combined with fuel oil (ANFO) to create the primary industrial explosive used in blasting rock and overburden.4. Environmental and Emission ControlMining operations use ammonia solution in smokestack scrubbers to neutralize acidic gases and convert harmful nitrogen oxides (NOx) into harmless nitrogen and water via Selective Catalytic Reduction (SCR) systems.Would you like to know more about:Ammonia-based leaching for gold/copper ores?Safety and storage protocols for handling 25% industrial ammonia?How it compares to cyanide extraction?

16/07/2026

Ammonia Solution

16/07/2026

16/07/2026

Available

13/07/2026

Mizani ya kupimia madini utaipata kwetu Kemikali & Vifaa vya Madini Ltd

Watch, follow, and discover more trending content.

10/07/2026

Best Laboratories in Town

Watch, follow, and discover more trending content.

09/07/2026

Kwa kila Punje inathamani kubwa katika kukuletea matokeo bora na sahihi. Tuamini na karibu tukuhudumie

01/07/2026

Available Kemikali & Vifaa vya Madini Ltd

Watch, follow, and discover more trending content.