invention and are not to be regarded as limitative. All parts and prop terjemahan - invention and are not to be regarded as limitative. All parts and prop Bahasa Indonesia Bagaimana mengatakan

invention and are not to be regarde

invention and are not to be regarded as limitative. All parts and proportions referred to herein and in the appended claims are by weight unless otherwise indicated.

Example I To a gold cyanide 10 cc. sample of a solution containing, per liter, 3.7 grams of gold as potassium gold cyanide, 21. grams of KCN, and 188 grams of KOH, there is added a mixture of 0.05 gram of sodium hydrosulfite and 0.05 gram of sodium acetate with agitation, the resulting mixture maintained at a temperature of about 180 F. for 20 minutes and the precipitated gold filtered off and weighed to determine the yield or percent recovery of the gold originally present in the solution. The same procedure is repeated for 40 and 60 minute durations to determine the degree of redissolution of precipitated gold.

For comparative purposes, the procedure of the preceding paragraph is repeated but using dextrose and sodium citrate, respectively, instead of sodium acetate. The results of these procedures are shown in the following table.

Percent Recovery Alter- Prccipitant 20 min. 40 min. 60 min.

The above results show that a 100% recovery is obtainable with each of the precipitant mixtures, but that Whereas redissolution of gold begins after 20 minutes using dextrose as additive and after 40 minutes using sodium citrate as additive, the use of sodium acetate as additive results in a 100% recovery after 40 minutes and an effective inhibition of subsequent redissolution of the precipitated gold. The use of 0.10 g. of sodium hydrosulfite as the sole precipitant in the above procedure yields results approximating those obtained with the mixture of 0.05 g. each of sodium hydrosulfite and dextrose. When other water soluble alkali metal alkanoates described above are employed in the procedure of this example instead of the sodium acetate, similarly improved results are obtained,

Example II When the procedure of Example I is repeated but using as the initial gold cyanide solution a cc. sample of a solution containing, per liter, 37 grams of gold as potassium gold cyanide, '30 grams of KCN, and 150 grams of KOH, and 0.5 gram each of sodium hydrosulfite and additive in each of the precipitant mixtures, similarly improved results are obtained with respect to percent recovery and inhibition of redissolution of precipitated gold.

This invention has been disclosed with respect to certain preferred embodiments, and it will be understood that various modifications and variations will become obvious to persons skilled in the art and are to be included within the spirit and purview of this invention and application and the scope of the appended claims.

I claim:

1. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution an alkali metal hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of a Water soluble alkali metal alkanoate per part by Weight of the hydrosulfite, maintaining the resulting solution at an elevated temperature above about 150 F. until cessation of precipitation of the gold, and removing the precipitated gold from the solution.

2. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution an alkali metal hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of alkali metal acetate per part by weight of the hydrosulfite, maintaining the resulting solution at an elevated temperature above about 150 F. until cessation of precipitation of the gold, and removing the precipitated gold from the solution.

3. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution of sodium hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of sodium acetate per part by weight of the hydrosulfite, maintaining the resulting solution at an elevated temperature above about 150 F. until cessation of precipitation of the gold, and removing the precipitated gold from the solution.

4. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution of sodium hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.5 to 5 parts of sodium acetate per part by weight of the hydrosulfite, maintaining the resulting solution at an solution at an elevated temperature above about 150 F.

until cessation of precipitation of the gold, and removing the precipitated gold from the solution.

5. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution of sodium hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 1 part of sodium acetate per part by weight of the hydrosulfite, maintaining the resulting solution at an elevated temperature above about 150 F. until cessation of the precipitation of the gold, and removing the precipitated gold from the solution.

6. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution an alkali metal hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of a Water soluble alkali metal alkanoate per part by weight of the hydrosulfite, and after cessation of precipitation of the gold, removing the precipitated gold from the solution.

7. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution an alkali metal hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of alkali metal acetate per part by Weight of the hydrosulfite, and after cessation of precipitation of the gold, removing the precipitated gold from the solution.

8. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution of sodium hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of sodium acetate per part by weight of the hydrosulfiite, and after cessation of precipitation of the gold, removing the precipitated gold from the solution.

References Cited by the Examiner UNITED STATES PATENTS 545,852 9/1895 De Wilde l06 1,426,517 8/ 1922 Sulyberger 75108 1,479,542 1/ 1924 Hirschkind 75l06 3,147,154 9/1964 Cole et al. 75108 3,215,524 11/1965 Fetscher et al 75l06 References Cited by the Applicant UNITED STATES PATENTS 2,100,865 11/ 1937 Mills et al.

2,913,336 11/1959 Dean.

2,945,757 7/ 1960 Hoekstra.

DAVID L. RECK, Primary Examiner.

N. F. MARKVA, Assistant Examiner.

KUTIPAN PATEN
Paten yang Dirujuk Tanggal pengajuan Tanggal publikasi Pemohon Judul
US545852 * 1
0/5000
Dari: -
Ke: -
Hasil (Bahasa Indonesia) 1: [Salinan]
Disalin!
penemuan dan untuk dianggap sebagai limitative. Semua bagian dan proporsi yang dirujuk disini dan di ditambahkan klaim yang berat kecuali dinyatakan.

contoh I untuk emas sianida 10 cc. sampel dari larutan yang mengandung per liter, 3.7 gram emas sebagai emas potasium sianida, 21. gram KCN, dan 188 gram KOH, ada ditambahkan campuran 0.05 gram natrium hydrosulfite dan 0.05 gram natrium asetat dengan agitasi, campuran dihasilkan dipertahankan pada suhu sekitar 180 F. selama 20 menit dan emas precipitated disaring dan berat untuk menentukan hasil atau persen pemulihan emas yang semula hadir dalam larutan. Prosedur yang sama diulang untuk 40 dan 60 menit durasi untuk menentukan tingkat redissolution emas precipitated.

Untuk tujuan perbandingan, prosedur paragraf sebelumnya adalah berulang kali tapi menggunakan dekstrosa serta natrium sitrat, masing-masing, bukan natrium asetat. Hasil dari prosedur ini ditunjukkan dalam tabel berikut.

persen pemulihan Alter - Prccipitant 20 min. 40 min. 60menit

hasil di atas menunjukkan bahwa 100% pemulihan dapat diperoleh dengan masing-masing campuran precipitant, Tapi itu sedangkan redissolution emas dimulai setelah 20 menit menggunakan dekstrosa sebagai aditif dan setelah 40 menit menggunakan natrium sitrat sebagai aditif, penggunaan natrium asetat sebagai aditif hasil dalam pemulihan 100% setelah 40 menit dan inhibisi berikutnya redissolution emas precipitated efektif. Penggunaan 0.10 g. dari natrium hydrosulfite sebagai satu-satunya precipitant prosedur di atas menghasilkan hasil yang mendekati yang diperoleh dengan campuran 0,05 g. setiap natrium hydrosulfite dan dekstrosa. Ketika air lainnya alkanoates larut logam alkali yang dijelaskan di atas bekerja dalam prosedur contoh ini bukan natrium asetat, demikian pula peningkatan hasil yang diperoleh,

Contoh II ketika prosedur contoh saya diulang tetapi menggunakan sebagai solusi awal emas sianida cc. sampel dari larutan yang mengandung, per liter, 37 gram emas sebagai emas potasium sianida, ' 30 gram KCN, dan 150 gram KOH, dan 0,5 gram natrium hydrosulfite dan aditif dalam campuran precipitant, masing-masing demikian pula peningkatan hasil yang diperoleh persen pemulihan dan inhibisi redissolution precipitated emas.

penemuan ini telah diungkapkan sehubungan dengan tertentu sangat disukai, dan itu akan dipahami bahwa berbagai modifikasi dan variasi akan menjadi jelas bagi orang yang terampil dalam seni dan harus dimasukkan dalam Roh dan lingkup penemuan ini dan aplikasi dan ruang lingkup dari klaim ditambahkan.

aku mengklaim:

1. Metode memulihkan emas dari suatu larutan alkali logam emas sianida menambahkan solusi yang hydrosulfite logam alkali dalam jumlah molar setidaknya setara dengan emas dalam larutan kata dan tentang bagian 0.2 hingga 20 alkanoate larut logam alkali air per bagian berat dari hydrosulfite, yang terdiri dari menjaga solusi yang dihasilkan pada suhu yang ditinggikan di atas sekitar 150 F. sampai penghentian presipitasi emas, dan menghapus precipitated emas dari solusi.

2. Metode memulihkan emas dari suatu larutan alkali logam emas sianida terdiri dari menambah solusi hydrosulfite logam alkali dalam jumlah yang molar setidaknya setara dengan emas dalam larutan kata dan sekitar 0.2 sampai 20 bagian logam alkali asetat setiap bagian dengan berat hydrosulfite, menjaga solusi yang dihasilkan pada suhu yang ditinggikan di atas sekitar 150 F. sampai penghentian presipitasi emas, dan menghapus precipitated emas dari solusi.

3. Metode memulihkan emas dari suatu larutan alkali logam emas sianida menambah larutan natrium hydrosulfite dalam jumlah yang molar setidaknya setara dengan emas dalam larutan kata dan tentang bagian-bagian 0.2 sampai 20 natrium asetat setiap bagian dengan berat hydrosulfite, yang terdiri dari menjaga solusi yang dihasilkan pada suhu yang ditinggikan di atas sekitar 150 F. sampai penghentian presipitasi emas, dan menghapus precipitated emas dari solusi.

4. Sebuah metode untuk memulihkan emas dari suatu larutan alkali logam emas sianida terdiri dari menambahkan larutan natrium hydrosulfite dalam jumlah yang molar setidaknya setara dengan emas dalam larutan kata dan tentang bagian-bagian 0,5 sampai 5 natrium asetat per bagian oleh berat hydrosulfite, menjaga solusi yang dihasilkan di solusi pada suhu yang ditinggikan di atas sekitar 150 F.

sampai penghentian presipitasi emas, dan menghapus precipitated emas dari solusi.

5. Metode memulihkan emas dari suatu larutan alkali logam emas sianida menambah larutan natrium hydrosulfite dalam jumlah yang molar setidaknya setara dengan emas di kata solusi dan 1 bagian dari natrium asetat setiap bagian dengan berat hydrosulfite, yang terdiri dari menjaga solusi yang dihasilkan pada suhu yang ditinggikan di atas sekitar 150 F. sampai penghentian presipitasi emas dan menghapus precipitated emas dari solusi.

6. Metode memulihkan emas dari suatu larutan alkali logam emas sianida terdiri dari menambahkan solusi yang hydrosulfite logam alkali dalam jumlah molar setidaknya setara dengan emas dalam larutan kata dan tentang bagian 0.2 hingga 20 alkanoate larut logam alkali air per bagian berat hydrosulfite, dan setelah penghentian presipitasi emas, menghapus precipitated emas dari solusi.

7. Metode memulihkan emas dari suatu larutan alkali logam emas sianida menambahkan solusi yang hydrosulfite logam alkali dalam jumlah molar setidaknya setara dengan emas dalam larutan kata dan sekitar 0.2 sampai 20 bagian logam alkali asetat per bagian berat dari hydrosulfite, yang terdiri dari dan setelah penghentian presipitasi emas, mengeluarkan precipitated emas dari solusi.

8. Metode memulihkan emas dari suatu larutan alkali logam emas sianida menambah larutan natrium hydrosulfite dalam jumlah yang molar setidaknya setara dengan emas dalam larutan kata dan tentang bagian-bagian 0.2 sampai 20 natrium asetat setiap bagian dengan berat hydrosulfiite, yang terdiri dari dan setelah penghentian presipitasi emas, mengeluarkan precipitated emas dari solusi.

referensi dikutip oleh pemeriksa Amerika Serikat Paten 545,852 9/1895 De Wilde l06 1,426,517 8 / 1922 Sulyberger 75108 1,479,542 1 / 1924 Hirschkind 75l 06 3,147,154 9/1964 Cole et al. 75108 3,215,524 11/1965 Fetscher et al 75l 06 referensi yang dikutip oleh pemohon Amerika Serikat Paten 2.100,865 11 / tahun 1937 Mills et al.

2, 913, 336 11/1959 Dean.

2, 945, 757 7 / 1960 Hoekstra.

DAVID L. RECK, utama pemeriksa.

N. F. MARKVA, Asisten pemeriksa.

KUTIPAN PATEN
Paten yang Dirujuk Tanggal pengajuan Tanggal publikasi Pemohon Judul
US545852 * 1
Sedang diterjemahkan, harap tunggu..
Hasil (Bahasa Indonesia) 2:[Salinan]
Disalin!
invention and are not to be regarded as limitative. All parts and proportions referred to herein and in the appended claims are by weight unless otherwise indicated.

Example I To a gold cyanide 10 cc. sample of a solution containing, per liter, 3.7 grams of gold as potassium gold cyanide, 21. grams of KCN, and 188 grams of KOH, there is added a mixture of 0.05 gram of sodium hydrosulfite and 0.05 gram of sodium acetate with agitation, the resulting mixture maintained at a temperature of about 180 F. for 20 minutes and the precipitated gold filtered off and weighed to determine the yield or percent recovery of the gold originally present in the solution. The same procedure is repeated for 40 and 60 minute durations to determine the degree of redissolution of precipitated gold.

For comparative purposes, the procedure of the preceding paragraph is repeated but using dextrose and sodium citrate, respectively, instead of sodium acetate. The results of these procedures are shown in the following table.

Percent Recovery Alter- Prccipitant 20 min. 40 min. 60 min.

The above results show that a 100% recovery is obtainable with each of the precipitant mixtures, but that Whereas redissolution of gold begins after 20 minutes using dextrose as additive and after 40 minutes using sodium citrate as additive, the use of sodium acetate as additive results in a 100% recovery after 40 minutes and an effective inhibition of subsequent redissolution of the precipitated gold. The use of 0.10 g. of sodium hydrosulfite as the sole precipitant in the above procedure yields results approximating those obtained with the mixture of 0.05 g. each of sodium hydrosulfite and dextrose. When other water soluble alkali metal alkanoates described above are employed in the procedure of this example instead of the sodium acetate, similarly improved results are obtained,

Example II When the procedure of Example I is repeated but using as the initial gold cyanide solution a cc. sample of a solution containing, per liter, 37 grams of gold as potassium gold cyanide, '30 grams of KCN, and 150 grams of KOH, and 0.5 gram each of sodium hydrosulfite and additive in each of the precipitant mixtures, similarly improved results are obtained with respect to percent recovery and inhibition of redissolution of precipitated gold.

This invention has been disclosed with respect to certain preferred embodiments, and it will be understood that various modifications and variations will become obvious to persons skilled in the art and are to be included within the spirit and purview of this invention and application and the scope of the appended claims.

I claim:

1. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution an alkali metal hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of a Water soluble alkali metal alkanoate per part by Weight of the hydrosulfite, maintaining the resulting solution at an elevated temperature above about 150 F. until cessation of precipitation of the gold, and removing the precipitated gold from the solution.

2. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution an alkali metal hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of alkali metal acetate per part by weight of the hydrosulfite, maintaining the resulting solution at an elevated temperature above about 150 F. until cessation of precipitation of the gold, and removing the precipitated gold from the solution.

3. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution of sodium hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of sodium acetate per part by weight of the hydrosulfite, maintaining the resulting solution at an elevated temperature above about 150 F. until cessation of precipitation of the gold, and removing the precipitated gold from the solution.

4. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution of sodium hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.5 to 5 parts of sodium acetate per part by weight of the hydrosulfite, maintaining the resulting solution at an solution at an elevated temperature above about 150 F.

until cessation of precipitation of the gold, and removing the precipitated gold from the solution.

5. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution of sodium hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 1 part of sodium acetate per part by weight of the hydrosulfite, maintaining the resulting solution at an elevated temperature above about 150 F. until cessation of the precipitation of the gold, and removing the precipitated gold from the solution.

6. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution an alkali metal hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of a Water soluble alkali metal alkanoate per part by weight of the hydrosulfite, and after cessation of precipitation of the gold, removing the precipitated gold from the solution.

7. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution an alkali metal hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of alkali metal acetate per part by Weight of the hydrosulfite, and after cessation of precipitation of the gold, removing the precipitated gold from the solution.

8. A method of recovering gold from an aqueous solution of alkali metal gold cyanide comprising adding to the solution of sodium hydrosulfite in a molar amount at least equivalent to the gold in said solution and about 0.2 to 20 parts of sodium acetate per part by weight of the hydrosulfiite, and after cessation of precipitation of the gold, removing the precipitated gold from the solution.

References Cited by the Examiner UNITED STATES PATENTS 545,852 9/1895 De Wilde l06 1,426,517 8/ 1922 Sulyberger 75108 1,479,542 1/ 1924 Hirschkind 75l06 3,147,154 9/1964 Cole et al. 75108 3,215,524 11/1965 Fetscher et al 75l06 References Cited by the Applicant UNITED STATES PATENTS 2,100,865 11/ 1937 Mills et al.

2,913,336 11/1959 Dean.

2,945,757 7/ 1960 Hoekstra.

DAVID L. RECK, Primary Examiner.

N. F. MARKVA, Assistant Examiner.

KUTIPAN PATEN
Paten yang Dirujuk Tanggal pengajuan Tanggal publikasi Pemohon Judul
US545852 * 1
Sedang diterjemahkan, harap tunggu..
 
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